启用显示所有网站设置的隐藏管理功能

测试于: WordPress 3.1 RC3

这小段代码确实很酷.它将在您的设置菜单中添加一个附加选项,并带有指向"所有设置"链接的链接.它将向您显示数据库中与WordPress网站相关的所有设置的完整列表.下面的代码只会使该链接对管理员用户可见,而对所有其他用户隐藏.

 // CUSTOM ADMIN MENU LINK FOR ALL SETTINGS
   function all_settings_link() {
    add_options_page(__('All Settings'), __('All Settings'), 'administrator', 'options.php');
   }
   add_action('admin_menu', 'all_settings_link');
 

Enable Hidden Administration Feature displaying All Site Settings

Tested on: WordPress 3.1 RC3

This little piece of code does something pretty cool. It will add an additional option to your settings menu with a link to "all settings" which will show you a complete list of all the settings you have within your database related to your WordPress site. The code below will only made this link visible to an administrator user and hide it for all other users.

// CUSTOM ADMIN MENU LINK FOR ALL SETTINGS
   function all_settings_link() {
    add_options_page(__('All Settings'), __('All Settings'), 'administrator', 'options.php');
   }
   add_action('admin_menu', 'all_settings_link');

修改登录徽标和图片网址链接

测试于: WordPress 3.0.1

此代码将使您轻松修改WordPress登录页面徽标以及该徽标的href链接和标题文本.

 add_filter( 'login_headerurl', 'namespace_login_headerurl' );
/**
 * Replaces the login header logo URL
 *
 * @param $url
 */
function namespace_login_headerurl( $url ) {
    $url = home_url( '/' );
    return $url;
}

add_filter( 'login_headertitle', 'namespace_login_headertitle' );
/**
 * Replaces the login header logo title
 *
 * @param $title
 */
function namespace_login_headertitle( $title ) {
    $title = get_bloginfo( 'name' );
    return $title;
}

add_action( 'login_head', 'namespace_login_style' );
/**
 * Replaces the login header logo
 */
function namespace_login_style() {
    echo '<style>.login h1 a { background-image: url( ' . get_template_directory_uri() . '/images/logo.png ) !important; }</style>';
}
 

编辑:如果要使用站点徽标替换登录徽标,则可以使用以下内容动态提取该信息(在 WP3.5 上进行了测试) :

 function namespace_login_style() {
    if( function_exists('get_custom_header') ){
        $width = get_custom_header()->width;
        $height = get_custom_header()->height;
    } else {
        $width = HEADER_IMAGE_WIDTH;
        $height = HEADER_IMAGE_HEIGHT;
    }
    echo '<style>'.PHP_EOL;
    echo '.login h1 a {'.PHP_EOL; 
    echo '  background-image: url( '; header_image(); echo ' ) !important; '.PHP_EOL;
    echo '  width: '.$width.'px !important;'.PHP_EOL;
    echo '  height: '.$height.'px !important;'.PHP_EOL;
    echo '  background-size: '.$width.'px '.$height.'px !important;'.PHP_EOL;
    echo '}'.PHP_EOL;
    echo '</style>'.PHP_EOL;
}
 

Modify the Login Logo & Image URL Link

Tested on: WordPress 3.0.1

This code will allow you to easily modify the WordPress Login page Logo as well as the href link and title text of this logo.

add_filter( 'login_headerurl', 'namespace_login_headerurl' );
/**
 * Replaces the login header logo URL
 *
 * @param $url
 */
function namespace_login_headerurl( $url ) {
    $url = home_url( '/' );
    return $url;
}

add_filter( 'login_headertitle', 'namespace_login_headertitle' );
/**
 * Replaces the login header logo title
 *
 * @param $title
 */
function namespace_login_headertitle( $title ) {
    $title = get_bloginfo( 'name' );
    return $title;
}

add_action( 'login_head', 'namespace_login_style' );
/**
 * Replaces the login header logo
 */
function namespace_login_style() {
    echo '<style>.login h1 a { background-image: url( ' . get_template_directory_uri() . '/images/logo.png ) !important; }</style>';
}

EDIT: If you want to use the site logo to replace the login logo, you can use the following to dynamically pull that information (tested on WP3.5):

function namespace_login_style() {
    if( function_exists('get_custom_header') ){
        $width = get_custom_header()->width;
        $height = get_custom_header()->height;
    } else {
        $width = HEADER_IMAGE_WIDTH;
        $height = HEADER_IMAGE_HEIGHT;
    }
    echo '<style>'.PHP_EOL;
    echo '.login h1 a {'.PHP_EOL; 
    echo '  background-image: url( '; header_image(); echo ' ) !important; '.PHP_EOL;
    echo '  width: '.$width.'px !important;'.PHP_EOL;
    echo '  height: '.$height.'px !important;'.PHP_EOL;
    echo '  background-size: '.$width.'px '.$height.'px !important;'.PHP_EOL;
    echo '}'.PHP_EOL;
    echo '</style>'.PHP_EOL;
}

在搜索结果中包括自定义帖子类型.

 // MAKE CUSTOM POST TYPES SEARCHABLE
function searchAll( $query ) {
 if ( $query->is_search ) { $query->set( 'post_type', array( 'site', 'plugin', 'theme', 'person' )); } 
 return $query;
}
add_filter( 'the_search_query', 'searchAll' );
 

默认情况下将自定义帖子类型添加到网站的主RSSfeed.

 // ADD CUSTOM POST TYPES TO THE DEFAULT RSS FEED
function custom_feed_request( $vars ) {
 if (isset($vars['feed']) && !isset($vars['post_type']))
  $vars['post_type'] = array( 'post', 'site', 'plugin', 'theme', 'person' );
 return $vars;
}
add_filter( 'request', 'custom_feed_request' );
 

在"立即添加"中添加自定义帖子类型管理员信息中心小部件

这将包括您的自定义帖子类型以及"立即注册"(Right Now)中每种类型的帖子计数仪表板小部件.

 // ADD CUSTOM POST TYPES TO THE 'RIGHT NOW' DASHBOARD WIDGET
function wph_right_now_content_table_end() {
 $args = array(
  'public' => true ,
  '_builtin' => false
 );
 $output = 'object';
 $operator = 'and';
 $post_types = get_post_types( $args , $output , $operator );
 foreach( $post_types as $post_type ) {
  $num_posts = wp_count_posts( $post_type->name );
  $num = number_format_i18n( $num_posts->publish );
  $text = _n( $post_type->labels->singular_name, $post_type->labels->name , intval( $num_posts->publish ) );
  if ( current_user_can( 'edit_posts' ) ) {
   $num = "<a href='edit.php?post_type=$post_type->name'>$num</a>";
   $text = "<a href='edit.php?post_type=$post_type->name'>$text</a>";
  }
  echo '<tr><td class="first num b b-' . $post_type->name . '">' . $num . '</td>';
  echo '<td class="text t ' . $post_type->name . '">' . $text . '</td></tr>';
 }
 $taxonomies = get_taxonomies( $args , $output , $operator ); 
 foreach( $taxonomies as $taxonomy ) {
  $num_terms  = wp_count_terms( $taxonomy->name );
  $num = number_format_i18n( $num_terms );
  $text = _n( $taxonomy->labels->singular_name, $taxonomy->labels->name , intval( $num_terms ));
  if ( current_user_can( 'manage_categories' ) ) {
   $num = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$num</a>";
   $text = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$text</a>";
  }
  echo '<tr><td class="first b b-' . $taxonomy->name . '">' . $num . '</td>';
  echo '<td class="t ' . $taxonomy->name . '">' . $text . '</td></tr>';
 }
}
add_action( 'right_now_content_table_end' , 'wph_right_now_content_table_end' );
 

Include custom post types in the search results.

// MAKE CUSTOM POST TYPES SEARCHABLE
function searchAll( $query ) {
 if ( $query->is_search ) { $query->set( 'post_type', array( 'site', 'plugin', 'theme', 'person' )); } 
 return $query;
}
add_filter( 'the_search_query', 'searchAll' );

Add your custom post types to your sites main RSS feed by default.

// ADD CUSTOM POST TYPES TO THE DEFAULT RSS FEED
function custom_feed_request( $vars ) {
 if (isset($vars['feed']) && !isset($vars['post_type']))
  $vars['post_type'] = array( 'post', 'site', 'plugin', 'theme', 'person' );
 return $vars;
}
add_filter( 'request', 'custom_feed_request' );

Include custom post types in "Right Now" admin dashboard widget

This will include your custom post types and the post counts for each type in the "Right Now" dashboard widget.

// ADD CUSTOM POST TYPES TO THE 'RIGHT NOW' DASHBOARD WIDGET
function wph_right_now_content_table_end() {
 $args = array(
  'public' => true ,
  '_builtin' => false
 );
 $output = 'object';
 $operator = 'and';
 $post_types = get_post_types( $args , $output , $operator );
 foreach( $post_types as $post_type ) {
  $num_posts = wp_count_posts( $post_type->name );
  $num = number_format_i18n( $num_posts->publish );
  $text = _n( $post_type->labels->singular_name, $post_type->labels->name , intval( $num_posts->publish ) );
  if ( current_user_can( 'edit_posts' ) ) {
   $num = "<a href='edit.php?post_type=$post_type->name'>$num</a>";
   $text = "<a href='edit.php?post_type=$post_type->name'>$text</a>";
  }
  echo '<tr><td class="first num b b-' . $post_type->name . '">' . $num . '</td>';
  echo '<td class="text t ' . $post_type->name . '">' . $text . '</td></tr>';
 }
 $taxonomies = get_taxonomies( $args , $output , $operator ); 
 foreach( $taxonomies as $taxonomy ) {
  $num_terms  = wp_count_terms( $taxonomy->name );
  $num = number_format_i18n( $num_terms );
  $text = _n( $taxonomy->labels->singular_name, $taxonomy->labels->name , intval( $num_terms ));
  if ( current_user_can( 'manage_categories' ) ) {
   $num = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$num</a>";
   $text = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$text</a>";
  }
  echo '<tr><td class="first b b-' . $taxonomy->name . '">' . $num . '</td>';
  echo '<td class="t ' . $taxonomy->name . '">' . $text . '</td></tr>';
 }
}
add_action( 'right_now_content_table_end' , 'wph_right_now_content_table_end' );

为ADMIN用户以外的所有用户删除更新通知

测试于: WordPress 3.0.1

此代码将确保除" admin"外没有其他用户可以访问可用更新时,WordPress会通知您.

 // REMOVE THE WORDPRESS UPDATE NOTIFICATION FOR ALL USERS EXCEPT SYSADMIN
   global $user_login;
   get_currentuserinfo();
   if ($user_login !== "admin") { // Change admin to the username that gets the updates
    add_action( 'init', create_function( '$a', "remove_action( 'init', 'wp_version_check' );" ), 2 );
    add_filter( 'pre_option_update_core', create_function( '$a', "return null;" ) );
   }
 

更改版本以仅显示管理员用户的更新通知(而不只是用户" admin"):

 // REMOVE THE WORDPRESS UPDATE NOTIFICATION FOR ALL USERS EXCEPT SYSADMIN
       global $user_login;
       get_currentuserinfo();
       if (!current_user_can('update_plugins')) { // Checks to see if current user can update plugins
        add_action( 'init', create_function( '$a', "remove_action( 'init', 'wp_version_check' );" ), 2 );
        add_filter( 'pre_option_update_core', create_function( '$a', "return null;" ) );
       }
 

Remove Update Notification for all users except ADMIN User

Tested on: WordPress 3.0.1

This code will ensures that no users other than "admin" are notified by WordPress when updates are available..

// REMOVE THE WORDPRESS UPDATE NOTIFICATION FOR ALL USERS EXCEPT SYSADMIN
   global $user_login;
   get_currentuserinfo();
   if ($user_login !== "admin") { // Change admin to the username that gets the updates
    add_action( 'init', create_function( '$a', "remove_action( 'init', 'wp_version_check' );" ), 2 );
    add_filter( 'pre_option_update_core', create_function( '$a', "return null;" ) );
   }

Changed version to only show update notification for admin users (as opposed to just the user 'admin'):

// REMOVE THE WORDPRESS UPDATE NOTIFICATION FOR ALL USERS EXCEPT SYSADMIN
       global $user_login;
       get_currentuserinfo();
       if (!current_user_can('update_plugins')) { // Checks to see if current user can update plugins
        add_action( 'init', create_function( '$a', "remove_action( 'init', 'wp_version_check' );" ), 2 );
        add_filter( 'pre_option_update_core', create_function( '$a', "return null;" ) );
       }

从Google CDN加载jQuery

经过以下测试: WordPress 3.0.1

 // Even more smart jQuery inclusion :)
add_action( 'init', 'jquery_register' );

// Register from Google and for footer
function jquery_register() {

    if ( !is_admin() ) {

        wp_deregister_script( 'jquery' );
        wp_register_script( 'jquery', ( 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js' ), false, null, true );
        wp_enqueue_script( 'jquery' );
    }
}
 

为了安全性删除WordPress版本信息

经过以下测试: WordPress 3.0.1

 // Remove version info from head and feeds
function complete_version_removal() {
    return '';
}
add_filter('the_generator', 'complete_version_removal');
 

添加垃圾邮件和删除指向前端评论的链接

经过以下测试: WordPress 3.0.1

通过添加垃圾邮件和删除链接,可以更轻松地从前端管理评论.**

 // Spam & delete links for all versions of WordPress
function delete_comment_link($id) {
    if (current_user_can('edit_post')) {
        echo '| <a href="'.get_bloginfo('wpurl').'/wp-admin/comment.php?action=cdc&c='.$id.'">del</a> ';
        echo '| <a href="'.get_bloginfo('wpurl').'/wp-admin/comment.php?action=cdc&dt=spam&c='.$id.'">spam</a>';
    }
}
 

将公开发布延迟到RSS Feed

经过以下测试: WordPress 3.0.1

最后,我希望将发布到RSS源的时间延迟10到15分钟,因为我总是在文本中发现至少两个错误.其他用途是在您希望将内容发布给RSS阅读器之前,要在一天内或一周内将其专有于您的网站.

 // Delay feed update
function publish_later_on_feed($where) {
    global $wpdb;

    if (is_feed()) {
        // Timestamp in WordPress format
        $now = gmdate('Y-m-d H:i:s');

        // Value for wait; + device
        $wait = '10'; // integer

        // http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_timestampdiff
        $device = 'MINUTE'; // MINUTE, HOUR, DAY, WEEK, MONTH, YEAR

        // Add SQL syntax to default $where
        $where .= " AND TIMESTAMPDIFF($device, $wpdb->posts.post_date_gmt, '$now') > $wait ";
    }
    return $where;
}
add_filter('posts_where', 'publish_later_on_feed');
 

Loading jQuery from the Google CDN

Tested on: WordPress 3.0.1

// Even more smart jQuery inclusion :)
add_action( 'init', 'jquery_register' );

// Register from Google and for footer
function jquery_register() {

    if ( !is_admin() ) {

        wp_deregister_script( 'jquery' );
        wp_register_script( 'jquery', ( 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js' ), false, null, true );
        wp_enqueue_script( 'jquery' );
    }
}

Remove the WordPress Version Info for Security

Tested on: WordPress 3.0.1

// Remove version info from head and feeds
function complete_version_removal() {
    return '';
}
add_filter('the_generator', 'complete_version_removal');

Add Spam & Delete Links to Comments on Front End

Tested on: WordPress 3.0.1

This makes it way easier to manage comments from the front end by adding spam and delete links.**

// Spam & delete links for all versions of WordPress
function delete_comment_link($id) {
    if (current_user_can('edit_post')) {
        echo '| <a href="'.get_bloginfo('wpurl').'/wp-admin/comment.php?action=cdc&c='.$id.'">del</a> ';
        echo '| <a href="'.get_bloginfo('wpurl').'/wp-admin/comment.php?action=cdc&dt=spam&c='.$id.'">spam</a>';
    }
}

Delay the public posting to RSS Feed

Tested on: WordPress 3.0.1

Finally, I like to delay posting to my RSS feeds for 10-15 minutes because I always find at least a couple errors in my text. Other uses are in case you want content to be exclusive to your site for a day or a week before pushing it out to your RSS readers.

// Delay feed update
function publish_later_on_feed($where) {
    global $wpdb;

    if (is_feed()) {
        // Timestamp in WordPress format
        $now = gmdate('Y-m-d H:i:s');

        // Value for wait; + device
        $wait = '10'; // integer

        // http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_timestampdiff
        $device = 'MINUTE'; // MINUTE, HOUR, DAY, WEEK, MONTH, YEAR

        // Add SQL syntax to default $where
        $where .= " AND TIMESTAMPDIFF($device, $wpdb->posts.post_date_gmt, '$now') > $wait ";
    }
    return $where;
}
add_filter('posts_where', 'publish_later_on_feed');

设置最大的修订版本数,以避免数据库过大.

测试于: WordPress 3.0.1

默认值为无穷大,它将设置为仅记住最后五个编辑:

 /**
 * Set the post revisions unless the constant was set in wp-config.php
 */
if (!defined('WP_POST_REVISIONS')) define('WP_POST_REVISIONS', 5);
 

对于有价值的东西,可以在Codex页面上设置大量的CONSTANTS好主意编辑wp-config.php .

Set a maximum number of post revisions to avoid DB bloat.

Tested on: WordPress 3.0.1

The default is infinite, and this will set it to only remember the last five edits:

/**
 * Set the post revisions unless the constant was set in wp-config.php
 */
if (!defined('WP_POST_REVISIONS')) define('WP_POST_REVISIONS', 5);

For what it's worth, there are a ton of great ideas for CONSTANTS that can be set on the Codex page Editing wp-config.php.

锐化调整大小的图像(仅JPEG)

此功能可锐化调整大小的JPEG图像.差异示例:

 function ajx_sharpen_resized_files( $resized_file ) {

    $image = wp_load_image( $resized_file );
    if ( !is_resource( $image ) )
        return new WP_Error( 'error_loading_image', $image, $file );

    $size = @getimagesize( $resized_file );
    if ( !$size )
        return new WP_Error('invalid_image', __('Could not read image size'), $file);
    list($orig_w, $orig_h, $orig_type) = $size;

    switch ( $orig_type ) {

        case IMAGETYPE_JPEG:
            $matrix = array(
                array(-1, -1, -1),
                array(-1, 16, -1),
                array(-1, -1, -1),
            );

            $divisor = array_sum(array_map('array_sum', $matrix));
            $offset = 0;
            imageconvolution($image, $matrix, $divisor, $offset);
            imagejpeg($image, $resized_file,apply_filters( 'jpeg_quality', 90, 'edit_image' ));
            break;

        case IMAGETYPE_PNG:
            return $resized_file;

        case IMAGETYPE_GIF:
            return $resized_file;
    }

    return $resized_file;
}

add_filter('image_make_intermediate_size', 'ajx_sharpen_resized_files', 900);
 

Sharpen Resized Images (only JPEG)

This function sharpens resized JPEG images. An example of a difference:

function ajx_sharpen_resized_files( $resized_file ) {

    $image = wp_load_image( $resized_file );
    if ( !is_resource( $image ) )
        return new WP_Error( 'error_loading_image', $image, $file );

    $size = @getimagesize( $resized_file );
    if ( !$size )
        return new WP_Error('invalid_image', __('Could not read image size'), $file);
    list($orig_w, $orig_h, $orig_type) = $size;

    switch ( $orig_type ) {

        case IMAGETYPE_JPEG:
            $matrix = array(
                array(-1, -1, -1),
                array(-1, 16, -1),
                array(-1, -1, -1),
            );

            $divisor = array_sum(array_map('array_sum', $matrix));
            $offset = 0;
            imageconvolution($image, $matrix, $divisor, $offset);
            imagejpeg($image, $resized_file,apply_filters( 'jpeg_quality', 90, 'edit_image' ));
            break;

        case IMAGETYPE_PNG:
            return $resized_file;

        case IMAGETYPE_GIF:
            return $resized_file;
    }

    return $resized_file;
}

add_filter('image_make_intermediate_size', 'ajx_sharpen_resized_files', 900);

删除默认的WordPress Meta Boxs

测试于: WordPress 3.0.1

此代码将允许您删除WordPress默认情况下添加到默认的"添加/编辑帖子"和"添加/编辑页面"屏幕的特定元框.

 // REMOVE META BOXES FROM DEFAULT POSTS SCREEN
function remove_default_post_screen_metaboxes() {
    remove_meta_box( 'postcustom','post','normal' ); // Custom Fields Metabox
    remove_meta_box( 'postexcerpt','post','normal' ); // Excerpt Metabox
    remove_meta_box( 'commentstatusdiv','post','normal' ); // Comments Metabox
    remove_meta_box( 'trackbacksdiv','post','normal' ); // Talkback Metabox
    remove_meta_box( 'slugdiv','post','normal' ); // Slug Metabox
    remove_meta_box( 'authordiv','post','normal' ); // Author Metabox
}
add_action('admin_menu', 'remove_default_post_screen_metaboxes');


// REMOVE META BOXES FROM DEFAULT PAGES SCREEN
function remove_default_page_screen_metaboxes() {
    remove_meta_box( 'postcustom','page','normal' ); // Custom Fields Metabox
    remove_meta_box( 'postexcerpt','page','normal' ); // Excerpt Metabox
    remove_meta_box( 'commentstatusdiv','page','normal' ); // Comments Metabox
    remove_meta_box( 'trackbacksdiv','page','normal' ); // Talkback Metabox
    remove_meta_box( 'slugdiv','page','normal' ); // Slug Metabox
    remove_meta_box( 'authordiv','page','normal' ); // Author Metabox
}
add_action('admin_menu', 'remove_default_page_screen_metaboxes');
 

Remove Default WordPress Meta Boxes

Tested on: WordPress 3.0.1

This code will allow you to remove specific Meta Boxes which WordPress adds by default to the default Add/Edit Post and Add/Edit Page screens.

// REMOVE META BOXES FROM DEFAULT POSTS SCREEN
function remove_default_post_screen_metaboxes() {
    remove_meta_box( 'postcustom','post','normal' ); // Custom Fields Metabox
    remove_meta_box( 'postexcerpt','post','normal' ); // Excerpt Metabox
    remove_meta_box( 'commentstatusdiv','post','normal' ); // Comments Metabox
    remove_meta_box( 'trackbacksdiv','post','normal' ); // Talkback Metabox
    remove_meta_box( 'slugdiv','post','normal' ); // Slug Metabox
    remove_meta_box( 'authordiv','post','normal' ); // Author Metabox
}
add_action('admin_menu', 'remove_default_post_screen_metaboxes');


// REMOVE META BOXES FROM DEFAULT PAGES SCREEN
function remove_default_page_screen_metaboxes() {
    remove_meta_box( 'postcustom','page','normal' ); // Custom Fields Metabox
    remove_meta_box( 'postexcerpt','page','normal' ); // Excerpt Metabox
    remove_meta_box( 'commentstatusdiv','page','normal' ); // Comments Metabox
    remove_meta_box( 'trackbacksdiv','page','normal' ); // Talkback Metabox
    remove_meta_box( 'slugdiv','page','normal' ); // Slug Metabox
    remove_meta_box( 'authordiv','page','normal' ); // Author Metabox
}
add_action('admin_menu', 'remove_default_page_screen_metaboxes');

删除" WordPress"到" WordPress"过滤器

测试于: WordPress 3.0.1

在WordPress 3.0版中添加了一个过滤器,该过滤器会自动转换所有" WordPress"实例.(无大写字母P)转换为" WordPress"；(带有大写字母P)的帖子内容,帖子标题和评论文本.有人认为这是侵入性的,但我只需要不时对WordPress进行大小写错误,并发现该过滤器有些烦人.

 // Remove annoying P filter
if(function_exists('capital_P_dangit')) {
    foreach ( array( 'the_content', 'the_title' ) as $filter )
        remove_filter( $filter, 'capital_P_dangit', 11 );

    remove_filter('comment_text', 'capital_P_dangit', 31 );
}
 

Remove "Wordpress" to "WordPress" filter

Tested on: WordPress 3.0.1

There was a filter added with WordPress version 3.0 that automatically converts all instances of "Wordpress" (no capital P) to "WordPress" (with a capital P) in post content, post titles, and comment text. Some people see this as intrusive, but I just have a need to mis-case WordPress from time to time and found the filter somewhat annoying.

// Remove annoying P filter
if(function_exists('capital_P_dangit')) {
    foreach ( array( 'the_content', 'the_title' ) as $filter )
        remove_filter( $filter, 'capital_P_dangit', 11 );

    remove_filter('comment_text', 'capital_P_dangit', 31 );
}

自定义仪表板

 add_action('wp_dashboard_setup', 'my_custom_dashboard_widgets');

function my_custom_dashboard_widgets() {
   global $wp_meta_boxes;
 

删除这些仪表板小部件...

    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
   unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
   unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
 

添加一个名为"帮助和支持"的自定义小部件

    wp_add_dashboard_widget('custom_help_widget', 'Help and Support', 'custom_dashboard_help');
}
 

这是您的自定义小部件的内容

  function custom_dashboard_help() {
    echo '<p>Lorum ipsum delor sit amet et nunc</p>';
}
 

Customize the Dashboard

add_action('wp_dashboard_setup', 'my_custom_dashboard_widgets');

function my_custom_dashboard_widgets() {
   global $wp_meta_boxes;

Remove these dashboard widgets...

   unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
   unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
   unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);

Add a custom widget called 'Help and Support'

   wp_add_dashboard_widget('custom_help_widget', 'Help and Support', 'custom_dashboard_help');
}

This is the content for your custom widget

 function custom_dashboard_help() {
    echo '<p>Lorum ipsum delor sit amet et nunc</p>';
}

添加自定义用户配置文件字段

将下面的代码放入您的functions.php文件中,以添加自定义用户配置文件字段.根据需要编辑或添加行.

记住不要删除该行:返回$ contactmethods;否则,这将无法正常工作.

 // CUSTOM USER PROFILE FIELDS
   function my_custom_userfields( $contactmethods ) {

    // ADD CONTACT CUSTOM FIELDS
    $contactmethods['contact_phone_office']     = 'Office Phone';
    $contactmethods['contact_phone_mobile']     = 'Mobile Phone';
    $contactmethods['contact_office_fax']       = 'Office Fax';

    // ADD ADDRESS CUSTOM FIELDS
    $contactmethods['address_line_1']       = 'Address Line 1';
    $contactmethods['address_line_2']       = 'Address Line 2 (optional)';
    $contactmethods['address_city']         = 'City';
    $contactmethods['address_state']        = 'State';
    $contactmethods['address_zipcode']      = 'Zipcode';
    return $contactmethods;
   }
   add_filter('user_contactmethods','my_custom_userfields',10,1);
 

要显示自定义字段,可以使用下面列出的两种方法之一.

选项1:

 the_author_meta('facebook', $current_author->ID)
 

选项2:

 <?php $current_author = get_userdata(get_query_var('author')); ?>
<p><a href="<?php echo esc_url($current_author->contact_phone_office);?>" title="office_phone"> Office Phone</a></p>
 

Add Custom User Profile Fields

Place the code below into your functions.php file to add custom user profile fields. Edit or add lines as you see fit.

Remember not to remove the line: return $contactmethods; otherwise this won't work.

// CUSTOM USER PROFILE FIELDS
   function my_custom_userfields( $contactmethods ) {

    // ADD CONTACT CUSTOM FIELDS
    $contactmethods['contact_phone_office']     = 'Office Phone';
    $contactmethods['contact_phone_mobile']     = 'Mobile Phone';
    $contactmethods['contact_office_fax']       = 'Office Fax';

    // ADD ADDRESS CUSTOM FIELDS
    $contactmethods['address_line_1']       = 'Address Line 1';
    $contactmethods['address_line_2']       = 'Address Line 2 (optional)';
    $contactmethods['address_city']         = 'City';
    $contactmethods['address_state']        = 'State';
    $contactmethods['address_zipcode']      = 'Zipcode';
    return $contactmethods;
   }
   add_filter('user_contactmethods','my_custom_userfields',10,1);

To display custom fields you can use one of the two methods listed below.

Option 1:

the_author_meta('facebook', $current_author->ID)

Option 2:

<?php $current_author = get_userdata(get_query_var('author')); ?>
<p><a href="<?php echo esc_url($current_author->contact_phone_office);?>" title="office_phone"> Office Phone</a></p>

自定义管理菜单的顺序

经过以下测试: WordPress 3.0.1

此代码将使您可以重新组织管理菜单中元素的顺序.您需要做的就是单击管理菜单中的现有链接,然后复制/wp-admin/URL之前的所有内容.下面的顺序代表新管理菜单的顺序.

 // CUSTOMIZE ADMIN MENU ORDER
function custom_menu_order($menu_ord) {
    if (!$menu_ord)
        return true;
    return array(
     'index.php', // This represents the dashboard link
     'edit.php?post_type=events', // This is a custom post type menu
     'edit.php?post_type=news',
     'edit.php?post_type=articles',
     'edit.php?post_type=faqs',
     'edit.php?post_type=mentors',
     'edit.php?post_type=testimonials',
     'edit.php?post_type=services',
     'edit.php?post_type=page', // This is the default page menu
     'edit.php', // This is the default POST admin menu
 );
}
add_filter('custom_menu_order', 'custom_menu_order');
add_filter('menu_order', 'custom_menu_order');
 

Customize the order of the administration menu

Tested on: WordPress 3.0.1

This code will allow you to reorganize the order of elements in the administration menu. All that you need to do is click on an existing link in the administration menu and copy everything before the /wp-admin/ URL. The order below represents the order the new administration menu will have.

// CUSTOMIZE ADMIN MENU ORDER
function custom_menu_order($menu_ord) {
    if (!$menu_ord)
        return true;
    return array(
     'index.php', // This represents the dashboard link
     'edit.php?post_type=events', // This is a custom post type menu
     'edit.php?post_type=news',
     'edit.php?post_type=articles',
     'edit.php?post_type=faqs',
     'edit.php?post_type=mentors',
     'edit.php?post_type=testimonials',
     'edit.php?post_type=services',
     'edit.php?post_type=page', // This is the default page menu
     'edit.php', // This is the default POST admin menu
 );
}
add_filter('custom_menu_order', 'custom_menu_order');
add_filter('menu_order', 'custom_menu_order');

更改练习长度的功能

测试于: Wordpress 3.0.1

默认情况下,所有摘录的上限为55个字.使用下面的代码,您可以覆盖此默认设置:

 function new_excerpt_length($length) { 
    return 100;
}

add_filter('excerpt_length', 'new_excerpt_length');
 

此示例将摘录长度更改为100个字,但是您可以使用相同的方法将其更改为任何值.

Function to change the length of Exerpt

Tested on: Wordpress 3.0.1

By default all excerpts are capped at 55 words. Utilizing the code below you can override this default settings:

function new_excerpt_length($length) { 
    return 100;
}

add_filter('excerpt_length', 'new_excerpt_length');

This example changes the excerpt length to 100 words, but you can use the same method to change it to any value.

在"管理帖子/页面"列表中添加缩略图

您可以将其添加到功能中以显示在"管理/编辑帖子和页面"中,并在缩略图预览中列出新列.

 /****** Add Thumbnails in Manage Posts/Pages List ******/
if ( !function_exists('AddThumbColumn') && function_exists('add_theme_support') ) {
 
    // for post and page
    add_theme_support('post-thumbnails', array( 'post', 'page' ) );
 
    function AddThumbColumn($cols) {
 
        $cols['thumbnail'] = __('Thumbnail');
 
        return $cols;
    }
 
    function AddThumbValue($column_name, $post_id) {
 
            $width = (int) 35;
            $height = (int) 35;
 
            if ( 'thumbnail' == $column_name ) {
                // thumbnail of WP 2.9
                $thumbnail_id = get_post_meta( $post_id, '_thumbnail_id', true );
                // image from gallery
                $attachments = get_children( array('post_parent' => $post_id, 'post_type' => 'attachment', 'post_mime_type' => 'image') );
                if ($thumbnail_id)
                    $thumb = wp_get_attachment_image( $thumbnail_id, array($width, $height), true );
                elseif ($attachments) {
                    foreach ( $attachments as $attachment_id => $attachment ) {
                        $thumb = wp_get_attachment_image( $attachment_id, array($width, $height), true );
                    }
                }
                    if ( isset($thumb) && $thumb ) {
                        echo $thumb;
                    } else {
                        echo __('None');
                    }
            }
    }
 
    // for posts
    add_filter( 'manage_posts_columns', 'AddThumbColumn' );
    add_action( 'manage_posts_custom_column', 'AddThumbValue', 10, 2 );
 
    // for pages
    add_filter( 'manage_pages_columns', 'AddThumbColumn' );
    add_action( 'manage_pages_custom_column', 'AddThumbValue', 10, 2 );
}
 

Add Thumbnails in Manage Posts/Pages List

You can add this to your functions to display to the Manage/Edit Post and Pages List a new column with the thumbnail preview.

/****** Add Thumbnails in Manage Posts/Pages List ******/
if ( !function_exists('AddThumbColumn') && function_exists('add_theme_support') ) {
 
    // for post and page
    add_theme_support('post-thumbnails', array( 'post', 'page' ) );
 
    function AddThumbColumn($cols) {
 
        $cols['thumbnail'] = __('Thumbnail');
 
        return $cols;
    }
 
    function AddThumbValue($column_name, $post_id) {
 
            $width = (int) 35;
            $height = (int) 35;
 
            if ( 'thumbnail' == $column_name ) {
                // thumbnail of WP 2.9
                $thumbnail_id = get_post_meta( $post_id, '_thumbnail_id', true );
                // image from gallery
                $attachments = get_children( array('post_parent' => $post_id, 'post_type' => 'attachment', 'post_mime_type' => 'image') );
                if ($thumbnail_id)
                    $thumb = wp_get_attachment_image( $thumbnail_id, array($width, $height), true );
                elseif ($attachments) {
                    foreach ( $attachments as $attachment_id => $attachment ) {
                        $thumb = wp_get_attachment_image( $attachment_id, array($width, $height), true );
                    }
                }
                    if ( isset($thumb) && $thumb ) {
                        echo $thumb;
                    } else {
                        echo __('None');
                    }
            }
    }
 
    // for posts
    add_filter( 'manage_posts_columns', 'AddThumbColumn' );
    add_action( 'manage_posts_custom_column', 'AddThumbValue', 10, 2 );
 
    // for pages
    add_filter( 'manage_pages_columns', 'AddThumbColumn' );
    add_action( 'manage_pages_custom_column', 'AddThumbValue', 10, 2 );
}

将ping删除到您自己的博客中

测试于: WordPress 3.0.1

 // Remove pings to self
function no_self_ping( &$links ) {
    $home = get_option( 'home' );
    foreach ( $links as $l => $link )
        if ( 0 === strpos( $link, $home ) )
            unset($links[$l]);
}
add_action( 'pre_ping', 'no_self_ping' );
 

Remove pings to your own blog

Tested on: WordPress 3.0.1

// Remove pings to self
function no_self_ping( &$links ) {
    $home = get_option( 'home' );
    foreach ( $links as $l => $link )
        if ( 0 === strpos( $link, $home ) )
            unset($links[$l]);
}
add_action( 'pre_ping', 'no_self_ping' );

启用GZIP输出压缩

通常应将服务器设置为自动执行此操作,但是许多共享主机不执行此操作(可能会增加客户端带宽使用率).

  if(extension_loaded("zlib") && (ini_get("output_handler") != "ob_gzhandler"))
   add_action('wp', create_function('', '@ob_end_clean();@ini_set("zlib.output_compression", 1);'));
 

Enable GZIP output compression

Normally the server should be set up to do this automatically, but a lot of shared hosts don’t do this (probably to increase client bandwidth usage).

 if(extension_loaded("zlib") && (ini_get("output_handler") != "ob_gzhandler"))
   add_action('wp', create_function('', '@ob_end_clean();@ini_set("zlib.output_compression", 1);'));

显示数据库查询,花费的时间和内存消耗

测试于: WordPress 3.0.1

 function performance( $visible = false ) {

    $stat = sprintf( '%d queries in %.3f seconds, using %.2fMB memory',
            get_num_queries(),
            timer_stop( 0, 3 ),
            memory_get_peak_usage() / 1024 / 1024
        );

    echo $visible ? $stat : "<!-- {$stat} -->" ;
}
 

然后在上面代码下面的代码将自动将上面代码插入公共网站的页脚(确保您的主题正在调用wp_footer):

 add_action( 'wp_footer', 'performance', 20 );
 

可以多次调用.

Display DB Queries, Time Spent and Memory Consumption

Tested on: WordPress 3.0.1

function performance( $visible = false ) {

    $stat = sprintf( '%d queries in %.3f seconds, using %.2fMB memory',
            get_num_queries(),
            timer_stop( 0, 3 ),
            memory_get_peak_usage() / 1024 / 1024
        );

    echo $visible ? $stat : "<!-- {$stat} -->" ;
}

Then this code below the code above which will automatically insert the code above into the footer of your public website (make sure your theme is calling wp_footer):

add_action( 'wp_footer', 'performance', 20 );

It can be called multiple times.

取消注册WordPress默认小部件

测试于: WordPress 3.0.1

 // Unregister all default WordPress Widgets
function unregister_default_wp_widgets() {
    unregister_widget('WP_Widget_Pages');
    unregister_widget('WP_Widget_Calendar');
    unregister_widget('WP_Widget_Archives');
    unregister_widget('WP_Widget_Links');
    unregister_widget('WP_Widget_Meta');
    unregister_widget('WP_Widget_Search');
    unregister_widget('WP_Widget_Text');
    unregister_widget('WP_Widget_Categories');
    unregister_widget('WP_Widget_Recent_Posts');
    unregister_widget('WP_Widget_Recent_Comments');
    unregister_widget('WP_Widget_RSS');
    unregister_widget('WP_Widget_Tag_Cloud');
}
add_action('widgets_init', 'unregister_default_wp_widgets', 1);
 

Unregister WordPress Default Widgets

Tested on: WordPress 3.0.1

// Unregister all default WordPress Widgets
function unregister_default_wp_widgets() {
    unregister_widget('WP_Widget_Pages');
    unregister_widget('WP_Widget_Calendar');
    unregister_widget('WP_Widget_Archives');
    unregister_widget('WP_Widget_Links');
    unregister_widget('WP_Widget_Meta');
    unregister_widget('WP_Widget_Search');
    unregister_widget('WP_Widget_Text');
    unregister_widget('WP_Widget_Categories');
    unregister_widget('WP_Widget_Recent_Posts');
    unregister_widget('WP_Widget_Recent_Comments');
    unregister_widget('WP_Widget_RSS');
    unregister_widget('WP_Widget_Tag_Cloud');
}
add_action('widgets_init', 'unregister_default_wp_widgets', 1);

自动从帖子内容中提取第一张图片

测试于: WordPress 3.0.1

此代码将自动提取与帖子关联的第一张图像,并允许您通过调用getImage函数来显示/使用它.

 // AUTOMATICALLY EXTRACT THE FIRST IMAGE FROM THE POST
function getImage($num) {
    global $more;
    $more = 1;
    $link = get_permalink();
    $content = get_the_content();
    $count = substr_count($content, '<img');
    $start = 0;

    for($i=1;$i<=$count;$i++) {
        $imgBeg = strpos($content, '<img', $start);
        $post = substr($content, $imgBeg);
        $imgEnd = strpos($post, '>');
        $postOutput = substr($post, 0, $imgEnd+1);
        $postOutput = preg_replace('/width="([0-9]*)" height="([0-9]*)"/', '',$postOutput);;
        $image[$i] = $postOutput;
        $start=$imgEnd+1;
    }

    if(stristr($image[$num],'<img')) {
        echo '<a href="'.$link.'">'.$image[$num]."</a>";
    }
    $more = 0;
}
 

Auto Extract the First Image from the Post Content

Tested on: WordPress 3.0.1

This code will automatically extract the first image associated with a post and allow you to display/use it by calling the getImage function.

// AUTOMATICALLY EXTRACT THE FIRST IMAGE FROM THE POST
function getImage($num) {
    global $more;
    $more = 1;
    $link = get_permalink();
    $content = get_the_content();
    $count = substr_count($content, '<img');
    $start = 0;

    for($i=1;$i<=$count;$i++) {
        $imgBeg = strpos($content, '<img', $start);
        $post = substr($content, $imgBeg);
        $imgEnd = strpos($post, '>');
        $postOutput = substr($post, 0, $imgEnd+1);
        $postOutput = preg_replace('/width="([0-9]*)" height="([0-9]*)"/', '',$postOutput);;
        $image[$i] = $postOutput;
        $start=$imgEnd+1;
    }

    if(stristr($image[$num],'<img')) {
        echo '<a href="'.$link.'">'.$image[$num]."</a>";
    }
    $more = 0;
}

仅针对不活动的插件删除插件更新通知

 function update_active_plugins($value = '') {
    /*
    The $value array passed in contains the list of plugins with time
    marks when the last time the groups was checked for version match
    The $value->reponse node contains an array of the items that are
    out of date. This response node is use by the 'Plugins' menu
    for example to indicate there are updates. Also on the actual
    plugins listing to provide the yellow box below a given plugin
    to indicate action is needed by the user.
    */
    if ((isset($value->response)) && (count($value->response))) {

        // Get the list cut current active plugins
        $active_plugins = get_option('active_plugins');    
        if ($active_plugins) {
           
            //  Here we start to compare the $value->response
            //  items checking each against the active plugins list.
            foreach($value->response as $plugin_idx => $plugin_item) {

                // If the response item is not an active plugin then remove it.
                // This will prevent WordPress from indicating the plugin needs update actions.
                if (!in_array($plugin_idx, $active_plugins))
                    unset($value->response[$plugin_idx]);
            }
        }
        else {
             // If no active plugins then ignore the inactive out of date ones.
            foreach($value->response as $plugin_idx => $plugin_item) {
                unset($value->response);
            }          
        }
    }  
    return $value;
}
add_filter('transient_update_plugins', 'update_active_plugins');    // Hook for 2.8.+
//add_filter( 'option_update_plugins', 'update_active_plugins');    // Hook for 2.7.x
 

Remove Plugin Update Notice ONLY for INACTIVE plugins

function update_active_plugins($value = '') {
    /*
    The $value array passed in contains the list of plugins with time
    marks when the last time the groups was checked for version match
    The $value->reponse node contains an array of the items that are
    out of date. This response node is use by the 'Plugins' menu
    for example to indicate there are updates. Also on the actual
    plugins listing to provide the yellow box below a given plugin
    to indicate action is needed by the user.
    */
    if ((isset($value->response)) && (count($value->response))) {

        // Get the list cut current active plugins
        $active_plugins = get_option('active_plugins');    
        if ($active_plugins) {
           
            //  Here we start to compare the $value->response
            //  items checking each against the active plugins list.
            foreach($value->response as $plugin_idx => $plugin_item) {

                // If the response item is not an active plugin then remove it.
                // This will prevent WordPress from indicating the plugin needs update actions.
                if (!in_array($plugin_idx, $active_plugins))
                    unset($value->response[$plugin_idx]);
            }
        }
        else {
             // If no active plugins then ignore the inactive out of date ones.
            foreach($value->response as $plugin_idx => $plugin_item) {
                unset($value->response);
            }          
        }
    }  
    return $value;
}
add_filter('transient_update_plugins', 'update_active_plugins');    // Hook for 2.8.+
//add_filter( 'option_update_plugins', 'update_active_plugins');    // Hook for 2.7.x

删除<head>标记内的多余信息和HTML

 // remove unnecessary header info
add_action( 'init', 'remove_header_info' );
function remove_header_info() {
    remove_action( 'wp_head', 'rsd_link' );
    remove_action( 'wp_head', 'wlwmanifest_link' );
    remove_action( 'wp_head', 'wp_generator' );
    remove_action( 'wp_head', 'start_post_rel_link' );
    remove_action( 'wp_head', 'index_rel_link' );
    remove_action( 'wp_head', 'adjacent_posts_rel_link' );         // for WordPress < 3.0
    remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' ); // for WordPress >= 3.0
}

// remove extra CSS that 'Recent Comments' widget injects
add_action( 'widgets_init', 'remove_recent_comments_style' );
function remove_recent_comments_style() {
    global $wp_widget_factory;
    remove_action( 'wp_head', array(
        $wp_widget_factory->widgets['WP_Widget_Recent_Comments'],
        'recent_comments_style'
    ) );
}
 

Remove superfluous info and HTML within the <head> tag

// remove unnecessary header info
add_action( 'init', 'remove_header_info' );
function remove_header_info() {
    remove_action( 'wp_head', 'rsd_link' );
    remove_action( 'wp_head', 'wlwmanifest_link' );
    remove_action( 'wp_head', 'wp_generator' );
    remove_action( 'wp_head', 'start_post_rel_link' );
    remove_action( 'wp_head', 'index_rel_link' );
    remove_action( 'wp_head', 'adjacent_posts_rel_link' );         // for WordPress < 3.0
    remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' ); // for WordPress >= 3.0
}

// remove extra CSS that 'Recent Comments' widget injects
add_action( 'widgets_init', 'remove_recent_comments_style' );
function remove_recent_comments_style() {
    global $wp_widget_factory;
    remove_action( 'wp_head', array(
        $wp_widget_factory->widgets['WP_Widget_Recent_Comments'],
        'recent_comments_style'
    ) );
}

启用错误调试和日志记录以在实时站点上使用

这是我编写的使用WP_DEBUG常数的一段代码,这些常数通常默认情况下处于禁用状态.好吧,我创建了一种方法,不仅可以启用WP_DEBUG,这样您就可以在没有负面影响的实时站点中使用它,而且我还利用了其他调试常量来强制显示错误并创建日志文件./wp-content目录中的错误和注意事项.

将此代码拖放到wp-config.php文件中(在仅保存备份的情况下),然后可以在站点上任何URL的末尾传递?debug=1、2或3参数.

?debug=1=显示所有错误/通知 ?debug=2=强制显示它们 ?debug=3=在/wp-content dir中创建所有错误的debug.log文件.

 /**
* Written by Jared Williams - http://new2wp.com
* @wp-config.php replace WP_DEBUG constant with this code
* Enable WP debugging for usage on a live site
* http://core.trac.wordpress.org/browser/trunk/wp-includes/load.php#L230
* Pass the '?debug=#' parameter at the end of any URL on site
*
* http://example.com/?debug=1, /?debug=2, /?debug=3
*/
if ( isset($_GET['debug']) && $_GET['debug'] == '1' ) {
    // Enable the reporting of notices during development - E_ALL
    define('WP_DEBUG', true);
} elseif ( isset($_GET['debug']) && $_GET['debug'] == '2' ) {
    // Must be true for WP_DEBUG_DISPLAY to work
    define('WP_DEBUG', true);
    // Force the display of errors
    define('WP_DEBUG_DISPLAY', true);
} elseif ( isset($_GET['debug']) && $_GET['debug'] == '3' ) {
    // Must be true for WP_DEBUG_LOG to work
    define('WP_DEBUG', true);
    // Log errors to debug.log in the wp-content directory
    define('WP_DEBUG_LOG', true);
}
 

如果您有兴趣,我将在我为Comluv撰写的来宾帖子中详细介绍: http://comluv.com/dev/enable现场使用情况的调试和日志记录/

我仍在设法使该密码受密码保护,或者最好以某种方式使其在if(current_user_can('manage_themes')和is_logged_in())上起作用.

但这就是很多棘手的地方.

Enable Error Debugging And Logging To Use On Live Sites

This is a piece of code I wrote to make use of the WP_DEBUG constants that are normally disabled by default. Well, I created a way to not only enable WP_DEBUG so you can use it on a live site with no negative side-effects, but I also made use of the other debugging constants for forcing errors to be displayed, and for creating a log file of the errors and Notices in the /wp-content directory.

Drop this code in your wp-config.php file (AFTER YOU SAVE A BACKUP JUST IN CASE) and then you can pass the ?debug=1, 2, or 3 parameters at the end of any URL on your site.

?debug=1 = shows all errors/notices ?debug=2 = forces them to be displayed ?debug=3 = creates a debug.log file of all errors in /wp-content dir.

/**
* Written by Jared Williams - http://new2wp.com
* @wp-config.php replace WP_DEBUG constant with this code
* Enable WP debugging for usage on a live site
* http://core.trac.wordpress.org/browser/trunk/wp-includes/load.php#L230
* Pass the '?debug=#' parameter at the end of any URL on site
*
* http://example.com/?debug=1, /?debug=2, /?debug=3
*/
if ( isset($_GET['debug']) && $_GET['debug'] == '1' ) {
    // Enable the reporting of notices during development - E_ALL
    define('WP_DEBUG', true);
} elseif ( isset($_GET['debug']) && $_GET['debug'] == '2' ) {
    // Must be true for WP_DEBUG_DISPLAY to work
    define('WP_DEBUG', true);
    // Force the display of errors
    define('WP_DEBUG_DISPLAY', true);
} elseif ( isset($_GET['debug']) && $_GET['debug'] == '3' ) {
    // Must be true for WP_DEBUG_LOG to work
    define('WP_DEBUG', true);
    // Log errors to debug.log in the wp-content directory
    define('WP_DEBUG_LOG', true);
}

I go into more detail on the guest post I wrote for Comluv if you're interested, here: http://comluv.com/dev/enable-debugging-and-logging-for-live-site-usage/

I'm still working on a way to make this either password protected, or preferrably somehow make it work on if (current_user_can('manage_themes') and is_logged_in().

But that's where it gets alot more tricky.

自动将动态标题添加到公共页面

测试于: WordPress 3.0.1

使用下面的代码将根据正在公开查看的页面/帖子自动创建动态页面标题.

 /* Dynamic Titles **/
// This sets your <title> depending on what page you're on, for better formatting and for SEO
// You need to set the variable $longd to some custom text at the beginning of the function
function dynamictitles() {
    $longd = __('Enter your longdescription here.', 'texdomainstring');
        if ( is_single() ) {
          wp_title('');
          echo ' | '.get_bloginfo('name');

    } else if ( is_page() || is_paged() ) {
          bloginfo('name');
          wp_title('|');

    } else if ( is_author() ) {
          bloginfo('name');
          wp_title(' | '.__('Author', 'texdomainstring'));

    } else if ( is_category() ) {
          bloginfo('name');
          wp_title(' | '.__('Archive for', 'texdomainstring'));

    } else if ( is_tag() ) {
          echo get_bloginfo('name').' | '.__('Tag archive for', 'texdomainstring');
          wp_title('');

    } else if ( is_archive() ) {
          echo get_bloginfo('name').' | '.__('Archive for', 'texdomainstring');
          wp_title('');

    } else if ( is_search() ) {
          echo get_bloginfo('name').' | '.__('Search Results', 'texdomainstring');
    } else if ( is_404() ) {
          echo get_bloginfo('name').' | '.__('404 Error (Page Not Found)', 'texdomainstring');

    } else if ( is_home() ) {
          echo get_bloginfo('name').' | '.get_bloginfo('description');

    } else {
          echo get_bloginfo('name').' | '.($blog_longd);
    }
}
 

Automatically Add Dynamic Titles to Public Pages

Tested on: WordPress 3.0.1

Utilizing the code below will automatically create dynamic page titles based upon the pages/posts being viewed publicly.

/* Dynamic Titles **/
// This sets your <title> depending on what page you're on, for better formatting and for SEO
// You need to set the variable $longd to some custom text at the beginning of the function
function dynamictitles() {
    $longd = __('Enter your longdescription here.', 'texdomainstring');
        if ( is_single() ) {
          wp_title('');
          echo ' | '.get_bloginfo('name');

    } else if ( is_page() || is_paged() ) {
          bloginfo('name');
          wp_title('|');

    } else if ( is_author() ) {
          bloginfo('name');
          wp_title(' | '.__('Author', 'texdomainstring'));

    } else if ( is_category() ) {
          bloginfo('name');
          wp_title(' | '.__('Archive for', 'texdomainstring'));

    } else if ( is_tag() ) {
          echo get_bloginfo('name').' | '.__('Tag archive for', 'texdomainstring');
          wp_title('');

    } else if ( is_archive() ) {
          echo get_bloginfo('name').' | '.__('Archive for', 'texdomainstring');
          wp_title('');

    } else if ( is_search() ) {
          echo get_bloginfo('name').' | '.__('Search Results', 'texdomainstring');
    } else if ( is_404() ) {
          echo get_bloginfo('name').' | '.__('404 Error (Page Not Found)', 'texdomainstring');

    } else if ( is_home() ) {
          echo get_bloginfo('name').' | '.get_bloginfo('description');

    } else {
          echo get_bloginfo('name').' | '.($blog_longd);
    }
}

新角色和功能-只能运行一次！

我很方便使用这些,这是没有插件即可实现的正确方法.它们在选项数据库中设置了一个字段(prefix_user_roles),并且您不需要插件即可设置它们. 有关哪些可用功能及其功能描述的列表,请参见法典页面. 您只需取消注释这些块之一,加载任何页面,然后再次对其进行注释！.在这里,我正在创建一个具有所需功能的角色:

 /* Capabilities */

// To add the new role, using 'international' as the short name and
// 'International Blogger' as the displayed name in the User list and edit page:
/*
add_role('international', 'International Blogger', array(
    'read' => true, // True allows that capability, False specifically removes it.
    'edit_posts' => true,
    'delete_posts' => true,
    'edit_published_posts' => true,
    'publish_posts' => true,
    'edit_files' => true,
    'import' => true,
    'upload_files' => true //last in array needs no comma!
));
*/


// To remove one outright or remove one of the defaults:
/* 
remove_role('international');
*/
 

有时候,从现有角色中添加/删除而不是删除并重新添加一个角色很方便. 同样,您只需取消注释,重新加载页面,然后再次对其进行注释.这将在角色表中正确存储角色/能力. (这使开发人员可以控制它们,并消除了执行相同操作的笨重插件的开销.)在这里,我正在更改作者角色以删除其已发布的帖子(默认设置),但允许他们进行编辑他们发布的帖子(默认情况下,此角色是不可能的)-使用* add_cap *或* remove_cap *.

 /*
$edit_role = get_role('author');
   $edit_role->add_cap('edit_published_posts');
   $edit_role->remove_cap('delete_published_posts');
*/
 

我保留了Codex页面上带有网格的电子表格,用于通过这种方式进行修改的网站,因此我可以记住设置的方式,尽管将注释掉的代码保留在functions.php文件中也可以使用.请不要对这些示例进行注释,否则它将在每次页面加载时写入数据库！

New Roles and Capabilities - Only run once!

I keep these handy, this is the right way to do them without a plugin. They set a single field (prefix_user_roles) in the options database, and you don't need a plugin to set them. Refer to the Codex page for a list of what capabilities are available and descriptions for what they do. You only need to uncomment one of these blocks, load any page and then comment them again! Here I'm creating a role that's got the capabilities I need:

/* Capabilities */

// To add the new role, using 'international' as the short name and
// 'International Blogger' as the displayed name in the User list and edit page:
/*
add_role('international', 'International Blogger', array(
    'read' => true, // True allows that capability, False specifically removes it.
    'edit_posts' => true,
    'delete_posts' => true,
    'edit_published_posts' => true,
    'publish_posts' => true,
    'edit_files' => true,
    'import' => true,
    'upload_files' => true //last in array needs no comma!
));
*/


// To remove one outright or remove one of the defaults:
/* 
remove_role('international');
*/

It's sometimes handy to add/remove from an existing role rather than removing and re-adding one. Again, you only need to uncomment it, reload a page and then comment it again. This will store the role/capability properly in the options table. (This allows you, the developer to control them and removes the overhead of the bulky plugins that do the same thing.) Here I'm changing the author role to delete their published posts (the default), but allowing them the capability to edit their published posts (which isn't possible for this role by default)-- using *add_cap* or *remove_cap*.

/*
$edit_role = get_role('author');
   $edit_role->add_cap('edit_published_posts');
   $edit_role->remove_cap('delete_published_posts');
*/

I keep a spreadsheet with the grid from the Codex page for sites that modify this way, so I can remember how things are set, though leaving the commented out code in your functions.php file will work to. Don't leave these examples uncommented, or it will write to the database with each page load!

在小部件中启用简码

 // shortcode in widgets
if ( !is_admin() ){
    add_filter('widget_text', 'do_shortcode', 11);
}
 

Enable shortcodes in widgets

// shortcode in widgets
if ( !is_admin() ){
    add_filter('widget_text', 'do_shortcode', 11);
}

Wordpress自定义管理员页脚

//自定义管理员页脚文本
函数custom_admin_footer(){
 echo'在此处添加您的自定义页脚文本和html';
}
add_filter('admin_footer_text','custom_admin_footer');

我将其用于客户网站,作为与开发人员联系的简单参考.

Wordpress Custom Admin Footer

// customize admin footer text
function custom_admin_footer() {
        echo 'add your custom footer text and html here';
} 
add_filter('admin_footer_text', 'custom_admin_footer');

I use this for client sites as a simple point of reference to contact me as the dev.

禁用RSS源的功能

测试于: Wordpress 3.0.1

如果要将基于Wordpress的网站保持为静态,则可以禁用RSSfeed.

您可以使用此功能:

 function fb_disable_feed() {
wp_die( __('No feed available,please visit our <a href="'. get_bloginfo('url') .'">homepage</a>!') );
}

add_action('do_feed', 'fb_disable_feed', 1);
add_action('do_feed_rdf', 'fb_disable_feed', 1);
add_action('do_feed_rss', 'fb_disable_feed', 1);
add_action('do_feed_rss2', 'fb_disable_feed', 1);
add_action('do_feed_atom', 'fb_disable_feed', 1);
 

Function to Disable RSS Feeds

Tested on: Wordpress 3.0.1

You can disable RSS feeds If you want to maintain your Wordpress based website as static.

You can Use this function :

function fb_disable_feed() {
wp_die( __('No feed available,please visit our <a href="'. get_bloginfo('url') .'">homepage</a>!') );
}

add_action('do_feed', 'fb_disable_feed', 1);
add_action('do_feed_rdf', 'fb_disable_feed', 1);
add_action('do_feed_rss', 'fb_disable_feed', 1);
add_action('do_feed_rss2', 'fb_disable_feed', 1);
add_action('do_feed_atom', 'fb_disable_feed', 1);

将" Howdy"消息更改为" Welcome"

使用此功能,您可以自定义管理区域右上角的" Howdy"消息.
此功能利用JQuery将" Howdy"消息更改为" Welcome".

 /****** Customize admin message "Howdy" to "Welcome" ******/
$nohowdy = "Welcome";

if (is_admin()) {
    add_action('init', 'artdev_nohowdy_h');
    add_action('admin_footer', 'artdev_nohowdy_f');
}
// Load jQuery
function artdev_nohowdy_h() {
    wp_enqueue_script('jquery');
}
// Modify
function artdev_nohowdy_f() {
global $nohowdy;
echo <<<JS
<script type="text/javascript">
//<![CDATA[
var nohowdy = "$nohowdy";
jQuery('#user_info p')
    .html(
    jQuery('#user_info p')
        .html()
        .replace(/Howdy/,nohowdy)
    );
//]]>
JS;
}
 

PHP版本,使用gettext过滤器:

 add_filter('gettext', 'change_howdy', 10, 3);

function change_howdy($translated, $text, $domain) {

    if (!is_admin() || 'default' != $domain)
        return $translated;

    if (false !== strpos($translated, 'Howdy'))
        return str_replace('Howdy', 'Welcome', $translated);

    return $translated;
}
 

Change the "Howdy" message to "Welcome"

With this function you can customize the "Howdy" message in top right of your admin area.
This function make use of JQuery to change the "Howdy" message to "Welcome".

/****** Customize admin message "Howdy" to "Welcome" ******/
$nohowdy = "Welcome";

if (is_admin()) {
    add_action('init', 'artdev_nohowdy_h');
    add_action('admin_footer', 'artdev_nohowdy_f');
}
// Load jQuery
function artdev_nohowdy_h() {
    wp_enqueue_script('jquery');
}
// Modify
function artdev_nohowdy_f() {
global $nohowdy;
echo <<<JS
<script type="text/javascript">
//<![CDATA[
var nohowdy = "$nohowdy";
jQuery('#user_info p')
    .html(
    jQuery('#user_info p')
        .html()
        .replace(/Howdy/,nohowdy)
    );
//]]>
JS;
}

PHP version, using gettext filter:

add_filter('gettext', 'change_howdy', 10, 3);

function change_howdy($translated, $text, $domain) {

    if (!is_admin() || 'default' != $domain)
        return $translated;

    if (false !== strpos($translated, 'Howdy'))
        return str_replace('Howdy', 'Welcome', $translated);

    return $translated;
}

在"立即添加"中添加自定义帖子类型管理控制台

这将包括您的自定义帖子类型以及"立即注册"(Right Now)中每种类型的帖子计数仪表板小部件.

 // ADD CUSTOM POST TYPES TO THE 'RIGHT NOW' DASHBOARD WIDGET
function wph_right_now_content_table_end() {
 $args = array(
  'public' => true ,
  'show_ui' => true ,
  '_builtin' => false
 );
 $output = 'object';
 $operator = 'and';
 
 $post_types = get_post_types( $args , $output , $operator );
 foreach( $post_types as $post_type ) {
  $num_posts = wp_count_posts( $post_type->name );
  $num = number_format_i18n( $num_posts->publish );
  $text = _n( $post_type->labels->singular_name, $post_type->labels->name , intval( $num_posts->publish ) );
  if ( current_user_can( 'edit_posts' ) ) {
   $num = "<a href='edit.php?post_type=$post_type->name'>$num</a>";
   $text = "<a href='edit.php?post_type=$post_type->name'>$text</a>";
  }
  echo '<tr><td class="first b b-' . $post_type->name . '">' . $num . '</td>';
  echo '<td class="t ' . $post_type->name . '">' . $text . '</td></tr>';
 }
 $taxonomies = get_taxonomies( $args , $output , $operator ); 
 foreach( $taxonomies as $taxonomy ) {
  $num_terms  = wp_count_terms( $taxonomy->name );
  $num = number_format_i18n( $num_terms );
  $text = _n( $taxonomy->labels->singular_name, $taxonomy->labels->name , intval( $num_terms ));
  if ( current_user_can( 'manage_categories' ) ) {
   $num = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$num</a>";
   $text = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$text</a>";
  }
  echo '<tr><td class="first b b-' . $taxonomy->name . '">' . $num . '</td>';
  echo '<td class="t ' . $taxonomy->name . '">' . $text . '</td></tr>';
 }
}
add_action( 'right_now_content_table_end' , 'wph_right_now_content_table_end' );
 

Include custom post types in "Right Now" admin dashboard

This will include your custom post types and the post counts for each type in the "Right Now" dashboard widget.

// ADD CUSTOM POST TYPES TO THE 'RIGHT NOW' DASHBOARD WIDGET
function wph_right_now_content_table_end() {
 $args = array(
  'public' => true ,
  'show_ui' => true ,
  '_builtin' => false
 );
 $output = 'object';
 $operator = 'and';
 
 $post_types = get_post_types( $args , $output , $operator );
 foreach( $post_types as $post_type ) {
  $num_posts = wp_count_posts( $post_type->name );
  $num = number_format_i18n( $num_posts->publish );
  $text = _n( $post_type->labels->singular_name, $post_type->labels->name , intval( $num_posts->publish ) );
  if ( current_user_can( 'edit_posts' ) ) {
   $num = "<a href='edit.php?post_type=$post_type->name'>$num</a>";
   $text = "<a href='edit.php?post_type=$post_type->name'>$text</a>";
  }
  echo '<tr><td class="first b b-' . $post_type->name . '">' . $num . '</td>';
  echo '<td class="t ' . $post_type->name . '">' . $text . '</td></tr>';
 }
 $taxonomies = get_taxonomies( $args , $output , $operator ); 
 foreach( $taxonomies as $taxonomy ) {
  $num_terms  = wp_count_terms( $taxonomy->name );
  $num = number_format_i18n( $num_terms );
  $text = _n( $taxonomy->labels->singular_name, $taxonomy->labels->name , intval( $num_terms ));
  if ( current_user_can( 'manage_categories' ) ) {
   $num = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$num</a>";
   $text = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$text</a>";
  }
  echo '<tr><td class="first b b-' . $taxonomy->name . '">' . $num . '</td>';
  echo '<td class="t ' . $taxonomy->name . '">' . $text . '</td></tr>';
 }
}
add_action( 'right_now_content_table_end' , 'wph_right_now_content_table_end' );

向仪表板标题添加法典搜索表单

这是将Codex搜索表单添加到仪表板标题的一种简单方法,该表单位于快速链接下拉菜单的右上方.

 /**
 * ADD WP CODEX SEARCH FORM TO DASHBOARD HEADER
 */
function wp_codex_search_form() {
    echo '<form target="_blank" method="get" action="http://wordpress.org/search/do-search.php" class="alignright" style="margin: 11px 5px 0;">
        <input type="text" onblur="this.value=(this.value==\'\') ? \'Search the Codex\' : this.value;" onfocus="this.value=(this.value==\'Search the Codex\') ? \'\' : this.value;" maxlength="150" value="Search the Codex" name="search" class="text"> <input type="submit" value="Go" class="button" />
    </form>';
}

if( current_user_can( 'manage_plugins' )) {
// The number 11 needs to be a 10 for this to work!
    add_filter( 'in_admin_header', 'wp_codex_search_form', 11 );
}
 

Add a codex search form to the dashboard header

This is a simple way to add a codex search form to the dashboard header, on the top-right next to the quicklinks drop-down.

/**
 * ADD WP CODEX SEARCH FORM TO DASHBOARD HEADER
 */
function wp_codex_search_form() {
    echo '<form target="_blank" method="get" action="http://wordpress.org/search/do-search.php" class="alignright" style="margin: 11px 5px 0;">
        <input type="text" onblur="this.value=(this.value==\'\') ? \'Search the Codex\' : this.value;" onfocus="this.value=(this.value==\'Search the Codex\') ? \'\' : this.value;" maxlength="150" value="Search the Codex" name="search" class="text"> <input type="submit" value="Go" class="button" />
    </form>';
}

if( current_user_can( 'manage_plugins' )) {
// The number 11 needs to be a 10 for this to work!
    add_filter( 'in_admin_header', 'wp_codex_search_form', 11 );
}

"新媒体库"列以重新附加图像

此代码将新列添加到"媒体库"页面,使您可以重新附加图像

 add_filter("manage_upload_columns", 'upload_columns');
add_action("manage_media_custom_column", 'media_custom_columns', 0, 2);

function upload_columns($columns) {
    unset($columns['parent']);
    $columns['better_parent'] = "Parent";
    return $columns;
}
function media_custom_columns($column_name, $id) {
    $post = get_post($id);
    if($column_name != 'better_parent')
        return;
        if ( $post->post_parent > 0 ) {
            if ( get_post($post->post_parent) ) {
                $title =_draft_or_post_title($post->post_parent);
            }
            ?>
            <strong><a href="<?php echo get_edit_post_link( $post->post_parent ); ?>"><?php echo $title ?></a></strong>, <?php echo get_the_time(__('Y/m/d')); ?>
            <br />
            <a class="hide-if-no-js" onclick="findPosts.open('media[]','<?php echo $post->ID ?>');return false;" href="#the-list"><?php _e('Re-Attach'); ?></a>
            <?php
        } else {
            ?>
            <?php _e('(Unattached)'); ?><br />
            <a class="hide-if-no-js" onclick="findPosts.open('media[]','<?php echo $post->ID ?>');return false;" href="#the-list"><?php _e('Attach'); ?></a>
            <?php
        }
}
 

New Media Library Column to Re-Attach Images

This code adds a new column to the Media Library Page allowing you to re-attach images

add_filter("manage_upload_columns", 'upload_columns');
add_action("manage_media_custom_column", 'media_custom_columns', 0, 2);

function upload_columns($columns) {
    unset($columns['parent']);
    $columns['better_parent'] = "Parent";
    return $columns;
}
function media_custom_columns($column_name, $id) {
    $post = get_post($id);
    if($column_name != 'better_parent')
        return;
        if ( $post->post_parent > 0 ) {
            if ( get_post($post->post_parent) ) {
                $title =_draft_or_post_title($post->post_parent);
            }
            ?>
            <strong><a href="<?php echo get_edit_post_link( $post->post_parent ); ?>"><?php echo $title ?></a></strong>, <?php echo get_the_time(__('Y/m/d')); ?>
            <br />
            <a class="hide-if-no-js" onclick="findPosts.open('media[]','<?php echo $post->ID ?>');return false;" href="#the-list"><?php _e('Re-Attach'); ?></a>
            <?php
        } else {
            ?>
            <?php _e('(Unattached)'); ?><br />
            <a class="hide-if-no-js" onclick="findPosts.open('media[]','<?php echo $post->ID ?>');return false;" href="#the-list"><?php _e('Attach'); ?></a>
            <?php
        }
}

将编辑器默认设置为所见即所得或HTML

 function my_default_editor() {
    $r = 'tinymce'; // html or tinymce
    return $r;
}
add_filter( 'wp_default_editor', 'my_default_editor' );
 

以下是删除HTML编辑器的方法

 jQuery(document).ready(function($) {
$("#edButtonHTML").remove();
});
 

已更新 这是将默认编辑器设置为HTML的另一种方法

 add_filter('wp_default_editor', create_function('', 'return "html";'));
 

Set Editor Defaults to WYSIWYG or HTML

function my_default_editor() {
    $r = 'tinymce'; // html or tinymce
    return $r;
}
add_filter( 'wp_default_editor', 'my_default_editor' );

Here is how to remove the HTML Editor

jQuery(document).ready(function($) {
$("#edButtonHTML").remove();
});

UPDATED here is another way to set the default editor to HTML

add_filter('wp_default_editor', create_function('', 'return "html";'));

删除作者Metabox/选项＆amp;移至发布MetaBox

测试于: Wordpress 3.0.1

让我抓狂的一件事是混乱的Wordpress Admin区域.现在,我始终从一开始就在我的functions.php文件中设置的元素之一是删除"作者" MetaBox和"屏幕选项",然后将该选项添加到"发布" Metabox中.我认为这很有意义,并保持环境清洁.这也尊重适用的权限.

要实现此目标,只需将以下代码复制并粘贴到您的functions.php文件中即可.

如果您觉得有更好的方法可以这样做,请提出建议.

注意:更新了代码以解决编码问题

 // MOVE THE AUTHOR METABOX INTO THE PUBLISH METABOX
add_action( 'admin_menu', 'remove_author_metabox' );
add_action( 'post_submitbox_misc_actions', 'move_author_to_publish_metabox' );
function remove_author_metabox() {
    remove_meta_box( 'authordiv', 'post', 'normal' );
}
function move_author_to_publish_metabox() {
    global $post_ID;
    $post = get_post( $post_ID );
    echo '<div id="author" class="misc-pub-section" style="border-top-style:solid; border-top-width:1px; border-top-color:#EEEEEE; border-bottom-width:0px;">Author: ';
    post_author_meta_box( $post );
    echo '</div>';
}
 

Remove Author Metabox/Options & Move to Publish MetaBox

Tested on: Wordpress 3.0.1

One of the things that drive me crazy is a cluttered Wordpress Admin area. One of the elements which I now always setup from the start in my functions.php file is removing the Author MetaBox and Screen Options and then adding the option into the publish metabox. In my opinion this just makes sense and keep things clean. This also respects applicable permissions.

To achieve this goal, just copy and past the following code into your functions.php file.

If you feel there is a better way of doing this please suggest.

NOTE: UPDATED THE CODE TO FIX A CODING ISSUE

// MOVE THE AUTHOR METABOX INTO THE PUBLISH METABOX
add_action( 'admin_menu', 'remove_author_metabox' );
add_action( 'post_submitbox_misc_actions', 'move_author_to_publish_metabox' );
function remove_author_metabox() {
    remove_meta_box( 'authordiv', 'post', 'normal' );
}
function move_author_to_publish_metabox() {
    global $post_ID;
    $post = get_post( $post_ID );
    echo '<div id="author" class="misc-pub-section" style="border-top-style:solid; border-top-width:1px; border-top-color:#EEEEEE; border-bottom-width:0px;">Author: ';
    post_author_meta_box( $post );
    echo '</div>';
}

快速确定服务器＆amp;环境详细信息

如果您有多个服务器和多个环境(例如开发,QA和生产环境),这将非常有用.

对于我的系统,环境由主机名的前3个字母决定,但是可以轻松更改为适合您需要的名称.

 add_action( 'admin_notices', 'report_environment_status', 3 );

// Report on which server and environment details
function report_environment_status() {
    $server = php_uname('n');
    switch (strtolower(substr($server,0,3))) {
        case 'pXX':
            $msg = "PRODUCTION";
            break;
        case 'qXX':
            $msg = "QA";
            break;
        case 'dXX':
            $msg = "DEVELOPMENT";
            break;
        default :
            $msg = 'UNKNOWN';
    }
    echo "<div id='update-nag'>";
    echo "<b>You are in the $msg environment. (Server: $server)</b>";
    echo "</div>";
}
 

这使我免于多次更新错误的环境.

您也可以将其变成插件并通过网络激活它,以便所有站点都可以收到通知.

Quickly Determine Server & Environment Details

If you have multiple servers and multiple environments such as development, QA, and production environments, this can be very useful.

For my systems, environment is determined by the first 3 letters of the hostname, but this could easily be changed to whatever suits your needs.

add_action( 'admin_notices', 'report_environment_status', 3 );

// Report on which server and environment details
function report_environment_status() {
    $server = php_uname('n');
    switch (strtolower(substr($server,0,3))) {
        case 'pXX':
            $msg = "PRODUCTION";
            break;
        case 'qXX':
            $msg = "QA";
            break;
        case 'dXX':
            $msg = "DEVELOPMENT";
            break;
        default :
            $msg = 'UNKNOWN';
    }
    echo "<div id='update-nag'>";
    echo "<b>You are in the $msg environment. (Server: $server)</b>";
    echo "</div>";
}

This has saved me many times from making updates to the wrong environment.

You can also turn this into a plugin and network activate it so all sites get the notification.

快速功能.php编辑的集合

我在functions.php中也做了一些很棒的调整.多年来通过搜索找到了其中的大多数.

节选结尾

 function new_excerpt_more($more) {
    return '...';
}
add_filter('excerpt_more', 'new_excerpt_more');
 

替换WP管理员徽标

 function new_admin_logo() {
  echo '<style type="text/css">#header-logo { background-image: url('.get_bloginfo('template_directory').'/images/admin_logo.png) !important; }</style>';
}
add_action('admin_head', 'new_admin_logo');
 

自定义Favicon WP-Admin

 function admin_favicon() {
 echo '<link rel="shortcut icon" type="image/x-icon" href="' . get_bloginfo('template_directory') . '/images/favicon.ico" />';
}
add_action( 'admin_head', 'admin_favicon' );
 

自定义管理员页脚

 function custom_admin_footer() {
echo 'Welcome to my blog! No More Documentation Links!';
}
add_filter('admin_footer_text', 'custom_admin_footer');
 

Collection of quick function.php edits

I have a few awesome tweaks in functions.php as well. Found most of these by searching for them over the years.

Excerpt Ending

function new_excerpt_more($more) {
    return '...';
}
add_filter('excerpt_more', 'new_excerpt_more');

Replace WP Admin Logo

function new_admin_logo() {
  echo '<style type="text/css">#header-logo { background-image: url('.get_bloginfo('template_directory').'/images/admin_logo.png) !important; }</style>';
}
add_action('admin_head', 'new_admin_logo');

Custom Favicon WP-Admin

function admin_favicon() {
 echo '<link rel="shortcut icon" type="image/x-icon" href="' . get_bloginfo('template_directory') . '/images/favicon.ico" />';
}
add_action( 'admin_head', 'admin_favicon' );

Custom Admin Footer

function custom_admin_footer() {
echo 'Welcome to my blog! No More Documentation Links!';
}
add_filter('admin_footer_text', 'custom_admin_footer');

已修复:删除默认的Wordpress元框

这非常方便,但是有一些错误

 // REMOVE META BOXES FROM DEFAULT POSTS SCREEN
function remove_default_post_screen_metaboxes() {
 remove_meta_box( 'postcustom','post','normal' ); // Custom Fields Metabox
 remove_meta_box( 'postexcerpt','post','normal' ); // Excerpt Metabox
 remove_meta_box( 'commentstatusdiv','post','normal' ); // Comments Metabox
 remove_meta_box( 'trackbacksdiv','post','normal' ); // Talkback Metabox
 remove_meta_box( 'slugdiv','post','normal' ); // Slug Metabox
 remove_meta_box( 'authordiv','post','normal' ); // Author Metabox
}
add_action('admin_menu','remove_default_post_screen_metaboxes');


// REMOVE META BOXES FROM DEFAULT PAGES SCREEN
function remove_default_page_screen_metaboxes() {
 global $post_type;
 remove_meta_box( 'postcustom','page','normal' ); // Custom Fields Metabox
 remove_meta_box( 'postexcerpt','page','normal' ); // Excerpt Metabox
 remove_meta_box( 'commentstatusdiv','page','normal' ); // Comments Metabox
 remove_meta_box('commentsdiv','page','normal'); // Comments
 remove_meta_box( 'trackbacksdiv','page','normal' ); // Talkback Metabox
 remove_meta_box( 'slugdiv','page','normal' ); // Slug Metabox
 remove_meta_box( 'authordiv','page','normal' ); // Author Metabox
}
add_action('admin_menu','remove_default_page_screen_metaboxes');
 

Fixed: Remove Default Wordpress Meta Boxes

This was very handy but had some errors

// REMOVE META BOXES FROM DEFAULT POSTS SCREEN
function remove_default_post_screen_metaboxes() {
 remove_meta_box( 'postcustom','post','normal' ); // Custom Fields Metabox
 remove_meta_box( 'postexcerpt','post','normal' ); // Excerpt Metabox
 remove_meta_box( 'commentstatusdiv','post','normal' ); // Comments Metabox
 remove_meta_box( 'trackbacksdiv','post','normal' ); // Talkback Metabox
 remove_meta_box( 'slugdiv','post','normal' ); // Slug Metabox
 remove_meta_box( 'authordiv','post','normal' ); // Author Metabox
}
add_action('admin_menu','remove_default_post_screen_metaboxes');


// REMOVE META BOXES FROM DEFAULT PAGES SCREEN
function remove_default_page_screen_metaboxes() {
 global $post_type;
 remove_meta_box( 'postcustom','page','normal' ); // Custom Fields Metabox
 remove_meta_box( 'postexcerpt','page','normal' ); // Excerpt Metabox
 remove_meta_box( 'commentstatusdiv','page','normal' ); // Comments Metabox
 remove_meta_box('commentsdiv','page','normal'); // Comments
 remove_meta_box( 'trackbacksdiv','page','normal' ); // Talkback Metabox
 remove_meta_box( 'slugdiv','page','normal' ); // Slug Metabox
 remove_meta_box( 'authordiv','page','normal' ); // Author Metabox
}
add_action('admin_menu','remove_default_page_screen_metaboxes');

延长自动注销期限

测试于: Wordpress 3.0.1

使用下面的代码,您可以增加cookie的保存时间,因此,已登录的用户可以保持更长的登录时间:

 function keep_me_logged_in_for_1_year( $expirein ) {
   return 31556926; // 1 year in seconds
}
add_filter( 'auth_cookie_expiration', 'keep_me_logged_in_for_1_year' );
 

Extending Auto Logout Period

Tested on: Wordpress 3.0.1

Using the code below you can increase the time cookies are kept and therefor users who are logged in remain logged in longer:

function keep_me_logged_in_for_1_year( $expirein ) {
   return 31556926; // 1 year in seconds
}
add_filter( 'auth_cookie_expiration', 'keep_me_logged_in_for_1_year' );

添加"设置"插件列表页面上的插件链接

设置"设置" WordPress后端的插件页面上的插件链接,易于使用的用户跳转设置(该代码还提供适用于2.9版以下WordPress版本的解决方案)

 // plugin definitions
define( 'FB_BASENAME', plugin_basename( __FILE__ ) );
define( 'FB_BASEFOLDER', plugin_basename( dirname( __FILE__ ) ) );
define( 'FB_FILENAME', str_replace( FB_BASEFOLDER.'/', '', plugin_basename(__FILE__) ) );
function filter_plugin_meta($links, $file) {
  /* create link */
  if ( $file == FB_BASENAME ) {
    array_unshift(
      $links,
      sprintf( '<a href="options-general.php?page=%s">%s</a>', FB_FILENAME, __('Settings') )
    );
  }
  return $links;
}

global $wp_version;
if ( version_compare( $wp_version, '2.7alpha', '>' ) ) {
    add_filter( 'plugin_action_links_' . FB_WM_BASENAME, 'filter_plugin_meta', 10, 2);
} else {
    add_filter( 'plugin_action_links', 'filter_plugin_meta', 10, 2 );
}
 

Add a "Settings" link for plugins on the plugin list page

Set "Settings" link for plugins on plugin-page in WordPress backend, easy to use jump to settings for users (the code is also with an solution for WordPress version smaller 2.9)

// plugin definitions
define( 'FB_BASENAME', plugin_basename( __FILE__ ) );
define( 'FB_BASEFOLDER', plugin_basename( dirname( __FILE__ ) ) );
define( 'FB_FILENAME', str_replace( FB_BASEFOLDER.'/', '', plugin_basename(__FILE__) ) );
function filter_plugin_meta($links, $file) {
  /* create link */
  if ( $file == FB_BASENAME ) {
    array_unshift(
      $links,
      sprintf( '<a href="options-general.php?page=%s">%s</a>', FB_FILENAME, __('Settings') )
    );
  }
  return $links;
}

global $wp_version;
if ( version_compare( $wp_version, '2.7alpha', '>' ) ) {
    add_filter( 'plugin_action_links_' . FB_WM_BASENAME, 'filter_plugin_meta', 10, 2);
} else {
    add_filter( 'plugin_action_links', 'filter_plugin_meta', 10, 2 );
}

删除WordPress注释中URL的自动链接

remove_filter('comment_text','make_clickable',9);

Remove Auto Linking of URLs in WordPress Comments

remove_filter('comment_text', 'make_clickable', 9);

将页面模板过滤器添加到页面列表中

经过以下测试: WP 3.1

在页面列表中添加页面模板过滤器,因此您可以查看附加了给定模板的页面列表.

 class Page_Template_Filter {
    private $templates = array();
    public function __construct() {
        // If it's not the admin area or the current user can't edit pages let's just bail here
        if( !is_admin() || !current_user_can('edit_pages') )
            return;
        add_action( 'parse_query',           array( $this, 'pt_parse_query' ) );
        add_action( 'restrict_manage_posts', array( $this, 'pt_restrict_manage_posts' ) );
    }
    public function pt_parse_query( $query ) {
        global $pagenow, $post_type;
        if( 'edit.php' != $pagenow )
            return;

        switch( $post_type ) {
            case 'post':

            break;
            case 'page':
                $this->templates = get_page_templates();

                if( empty( $this->templates ) )
                    return;

                if( !$this->is_set_template() )
                    return;

                $meta_group = array( 'key' => '_wp_page_template', 'value' => $this->get_template() );
                set_query_var( 'meta_query', array( $meta_group ) );
            break;
        }
    }
    public function pt_restrict_manage_posts() {
        if( empty( $this->templates ) )
            return;
        $this->template_dropdown();
    }
    private function get_template() {
        if( $this->is_set_template() )
            foreach( $this->templates as $template ) {
                if( $template != $_GET['page_template'] )
                    continue;
                return $template;
            }
        return '';
    }
    private function is_set_template() {
        return (bool) ( isset( $_GET['page_template'] ) && ( in_array( $_GET['page_template'], $this->templates ) ) );
    }
    private function template_dropdown() {
        ?>
        <select name="page_template" id="page_template">
            <option value=""> - no template - </option>
            <?php foreach( $this->templates as $name => $file ): ?>
            <option value="<?php echo $file; ?>"<?php selected( $this->get_template() == $file ); ?>><?php _e( $name ); ?></option>
            <?php endforeach;?>
        </select>
        <?php 
    }
}

add_action('admin_init', 'load_ptf');
function load_ptf() {
    $Page_Template_Filter = new Page_Template_Filter;
}
 

至少需要3.1才能运行,尽管meta_query可以用3.0的旧版meta_key和meta_value代替.

Add page template filter to page listing

Tested on: WP 3.1

Adds a page template filter to the page listing, so you can view a list of pages that have a given template attached.

class Page_Template_Filter {
    private $templates = array();
    public function __construct() {
        // If it's not the admin area or the current user can't edit pages let's just bail here
        if( !is_admin() || !current_user_can('edit_pages') )
            return;
        add_action( 'parse_query',           array( $this, 'pt_parse_query' ) );
        add_action( 'restrict_manage_posts', array( $this, 'pt_restrict_manage_posts' ) );
    }
    public function pt_parse_query( $query ) {
        global $pagenow, $post_type;
        if( 'edit.php' != $pagenow )
            return;

        switch( $post_type ) {
            case 'post':

            break;
            case 'page':
                $this->templates = get_page_templates();

                if( empty( $this->templates ) )
                    return;

                if( !$this->is_set_template() )
                    return;

                $meta_group = array( 'key' => '_wp_page_template', 'value' => $this->get_template() );
                set_query_var( 'meta_query', array( $meta_group ) );
            break;
        }
    }
    public function pt_restrict_manage_posts() {
        if( empty( $this->templates ) )
            return;
        $this->template_dropdown();
    }
    private function get_template() {
        if( $this->is_set_template() )
            foreach( $this->templates as $template ) {
                if( $template != $_GET['page_template'] )
                    continue;
                return $template;
            }
        return '';
    }
    private function is_set_template() {
        return (bool) ( isset( $_GET['page_template'] ) && ( in_array( $_GET['page_template'], $this->templates ) ) );
    }
    private function template_dropdown() {
        ?>
        <select name="page_template" id="page_template">
            <option value=""> - no template - </option>
            <?php foreach( $this->templates as $name => $file ): ?>
            <option value="<?php echo $file; ?>"<?php selected( $this->get_template() == $file ); ?>><?php _e( $name ); ?></option>
            <?php endforeach;?>
        </select>
        <?php 
    }
}

add_action('admin_init', 'load_ptf');
function load_ptf() {
    $Page_Template_Filter = new Page_Template_Filter;
}

Requires at least 3.1 to work, though the meta_query could be replaced with the older meta_key and meta_value for 3.0.

不使用XML-RPC来提高性能

测试于: Wordpress 3.0.1

WordPress使用CURL操作来测试XML-RPC的SSL功能.如果您正在使用XML-RPC但未使用,则可以删除过滤器.这是一个很小的性能提升(因为基本上WP在https url上执行了cURL GET,并且1)收到拒绝的消息,或者2)超时,最多可能需要5秒钟),但是在我们的情况下,它实际上阻止了网关超时,其中代理在cURL GET超时之前就超时,导致XML-RPC无法使用.

 // Prevents WordPress from testing ssl capability on domain.com/xmlrpc.php?rsd
remove_filter('atom_service_url','atom_service_url_filter');
 

Remove XML-RPC when not in use for performance boost

Tested on: Wordpress 3.0.1

WordPress uses a CURL operation to test for SSL capability for XML-RPC. If you're using XML-RPC but not using, then you can remove the filter. This is a small performance boost (since basically WP does a cURL GET on the https url and either 1) gets a denied message, or 2) times out, and it can take upwards of 5 seconds), but in our case it actually prevented a gateway timeout where a proxy was timing out before the cURL GET was timing out rendering XML-RPC unusable.

// Prevents WordPress from testing ssl capability on domain.com/xmlrpc.php?rsd
remove_filter('atom_service_url','atom_service_url_filter');

全局获取所有自定义字段

 function get_custom_field($key, $echo = FALSE) {
    global $post;
    $custom_field = get_post_meta( $post->ID, $key, true );
    if ( $echo == false ) 
        return $custom_field;
    echo $custom_field;
}
 

然后单行调用字段

 <?php get_custom_field('custom-field-name', TRUE); ?>
 

Grab all custom fields globally

function get_custom_field($key, $echo = FALSE) {
    global $post;
    $custom_field = get_post_meta( $post->ID, $key, true );
    if ( $echo == false ) 
        return $custom_field;
    echo $custom_field;
}

Then call the field with a single line

<?php get_custom_field('custom-field-name', TRUE); ?>

返回评论数

这类似于count_user_posts(),但返回的是评论数:

 function count_user_comments($id) {
global $wpdb;
$users = $wpdb->get_var("
        SELECT COUNT( * ) AS total
        FROM $wpdb->comments
        WHERE comment_approved = 1 
        AND user_id = $id");
return $users;
}
 

更多:计算用户的帖子(包括自定义帖子类型)或评论:

 function atom_count($user_id, $what_to_count = 'post') {
  global $wpdb;    
  $where = $what_to_count == 'comment' ? "WHERE comment_approved = 1 AND user_id = {$user_id}" : get_posts_by_author_sql($what_to_count, TRUE, $user_id);
  $from = "FROM ".(($what_to_count == 'comment') ? $wpdb->comments : $wpdb->posts);    
  $count = $wpdb->get_var($wpdb->prepare("SELECT COUNT(*) {$from} {$where}"));
  return $count;
}
 

用法示例:

<?php echo atom_count(1, 'movie'); // displays 'movie' post type count ?>

<?php echo atom_count(1, 'comment'); // displays comment count ?>

Return the number of comments

This is like count_user_posts(), but returns the number of comments instead:

function count_user_comments($id) {
global $wpdb;
$users = $wpdb->get_var("
        SELECT COUNT( * ) AS total
        FROM $wpdb->comments
        WHERE comment_approved = 1 
        AND user_id = $id");
return $users;
}

More: Count User's posts (including custom post types) or comments:

function atom_count($user_id, $what_to_count = 'post') {
  global $wpdb;    
  $where = $what_to_count == 'comment' ? "WHERE comment_approved = 1 AND user_id = {$user_id}" : get_posts_by_author_sql($what_to_count, TRUE, $user_id);
  $from = "FROM ".(($what_to_count == 'comment') ? $wpdb->comments : $wpdb->posts);    
  $count = $wpdb->get_var($wpdb->prepare("SELECT COUNT(*) {$from} {$where}"));
  return $count;
}

Usage examples:

<?php echo atom_count(1, 'movie'); // displays 'movie' post type count ?>

<?php echo atom_count(1, 'comment'); // displays comment count ?>

启用嵌入文本/HTML小部件中

 add_filter('widget_text',array($ wp_embed,'run_shortcode'),8);
add_filter('widget_text',array($ wp_embed,'autoembed'),8); 

我将它用于youtube视频小部件和flickr的内容.

Enable oEmbed in Text/HTML Widgets

add_filter( 'widget_text', array( $wp_embed, 'run_shortcode' ), 8 );
add_filter( 'widget_text', array( $wp_embed, 'autoembed'), 8 );

I use this for youtube video widgets and flickr stuff.

帖子字数

测试于: Wordpress 3.0.1

(最初从 Post Word Count插件中提取由尼克·莫里克)

将已发布的单词总数添加到"立即"列表的底部.管理控制台上的框.如果您将博客用作 NaNoWriMo 之类的商品的渠道,或者您只是想保持跟踪,该功能将非常有用您的博客技能变得多么丰富.

 function post_word_count() {
    $count = 0;
    $posts = get_posts( array(
        'numberposts' => -1,
        'post_type' => array( 'post', 'page' )
    ));
    foreach( $posts as $post ) {
        $count += str_word_count( strip_tags( get_post_field( 'post_content', $post->ID )));
    }
    $num =  number_format_i18n( $count );
    // This block will add your word count to the stats portion of the Right Now box
    $text = _n( 'Word', 'Words', $num );
    echo "<tr><td class='first b'>{$num}</td><td class='t'>{$text}</td></tr>";
    // This line will add your word count to the bottom of the Right Now box.
    echo '<p>This blog contains a total of <strong>' . $num . '</strong> published words!</p>';
}

// add to Content Stats table
add_action( 'right_now_content_table_end', 'post_word_count');
// add to bottom of Activity Box
add_action('activity_box_end', 'post_word_count');
 

对 Rarst 表示敬意,以免查询地清除代码！

Post Word Count

Tested on: Wordpress 3.0.1

(Originally extracted from the Post Word Count plug-in by Nick Momrick)

Adds a count of total published words to the bottom of the "Right Now" box on the admin dashboard. Useful if you're using your blog as an outlet for something like NaNoWriMo or if you just want to keep track of how prolific your blogging skills have become.

function post_word_count() {
    $count = 0;
    $posts = get_posts( array(
        'numberposts' => -1,
        'post_type' => array( 'post', 'page' )
    ));
    foreach( $posts as $post ) {
        $count += str_word_count( strip_tags( get_post_field( 'post_content', $post->ID )));
    }
    $num =  number_format_i18n( $count );
    // This block will add your word count to the stats portion of the Right Now box
    $text = _n( 'Word', 'Words', $num );
    echo "<tr><td class='first b'>{$num}</td><td class='t'>{$text}</td></tr>";
    // This line will add your word count to the bottom of the Right Now box.
    echo '<p>This blog contains a total of <strong>' . $num . '</strong> published words!</p>';
}

// add to Content Stats table
add_action( 'right_now_content_table_end', 'post_word_count');
// add to bottom of Activity Box
add_action('activity_box_end', 'post_word_count');

Kudos to Rarst for the query-free cleanup of the code!

仅显示已登录用户的特定内容

测试于: Wordpress 3.0.1

 function content_only4logged_in($content) {

    // ALL LOGGED IN USERS
    if ( is_user_logged_in() &&
            !is_null($content) &&
            !is_feed()
         ) {
        return $content;
    } else {
        $content  = wp_html_excerpt( $content, 80 );
        $content .= ' …';
        $content .= __( 'Sorry, more of this content is only available for logged users.', FB_TEXTDOMAIN );
        return $content;
    }
}
add_action( 'the_content', 'content_only4logged_in' );
 

有关帖子 http:上的更多可能性和信息://wpengineer.com/2046/control-the-wordpress-content-via-user-or-time/

Display Specific Content only for logged in users

Tested on: Wordpress 3.0.1

function content_only4logged_in($content) {

    // ALL LOGGED IN USERS
    if ( is_user_logged_in() &&
            !is_null($content) &&
            !is_feed()
         ) {
        return $content;
    } else {
        $content  = wp_html_excerpt( $content, 80 );
        $content .= ' …';
        $content .= __( 'Sorry, more of this content is only available for logged users.', FB_TEXTDOMAIN );
        return $content;
    }
}
add_action( 'the_content', 'content_only4logged_in' );

more possibilities and informations on the post http://wpengineer.com/2046/control-the-wordpress-content-via-userrights-or-time/

有条件地加载脚本

这里是仅当存在特定的短代码或窗口小部件时才加载脚本的方法. 来源:仅当存在特定的短代码或窗口小部件时才加载脚本

 function has_my_shortcode($posts) {
    if ( empty($posts) )
        return $posts;
    $found = false;
    foreach ($posts as $post) {
        if ( stripos($post->post_content, '[my_shortcode') )
            $found = true;
            break;
        }
    if ($found){
        $urljs = get_bloginfo( 'template_directory' ).IMP_JS;
    wp_register_script('my_script', $urljs.'myscript.js' );
    wp_print_scripts('my_script');
}
    return $posts;
}
add_action('the_posts', 'has_my_shortcode');
 

这是仅在存在特定小部件的情况下加载脚本的方法

要在仅加载窗口小部件的页面中加载脚本,则必须在窗口小部件类中添加is_active_widget()代码.例如,请参阅默认的最近评论小部件(wp-includes/default-widgets.php,第602行):

 class WP_Widget_Recent_Comments extends WP_Widget {
    function WP_Widget_Recent_Comments() {
        $widget_ops = array('classname' => 'widget_recent_comments', 'description' => __( 'The most recent comments' ) );
        $this->WP_Widget('recent-comments', __('Recent Comments'), $widget_ops);
        $this->alt_option_name = 'widget_recent_comments';
        if ( is_active_widget(false, false, $this->id_base) )
        add_action( 'wp_head', array(&$this, 'recent_comments_style') );
        add_action( 'comment_post', array(&$this, 'flush_widget_cache') );
        add_action( 'transition_comment_status', array(&$this, 'flush_widget_cache') );
    }
 

Loading scripts conditionally

Here is a way to load scripts only if a particular shortcode or widget is present. source: Loading scripts only if a particular shortcode or widget is present

function has_my_shortcode($posts) {
    if ( empty($posts) )
        return $posts;
    $found = false;
    foreach ($posts as $post) {
        if ( stripos($post->post_content, '[my_shortcode') )
            $found = true;
            break;
        }
    if ($found){
        $urljs = get_bloginfo( 'template_directory' ).IMP_JS;
    wp_register_script('my_script', $urljs.'myscript.js' );
    wp_print_scripts('my_script');
}
    return $posts;
}
add_action('the_posts', 'has_my_shortcode');

And here is how to load scripts only if a certain widget is present

To load the script in the page where the widget is loaded only, you will have to add the is_active_widget() code, in you widget class. E.g., see the default recent comments widget (wp-includes/default-widgets.php, line 602):

class WP_Widget_Recent_Comments extends WP_Widget {
    function WP_Widget_Recent_Comments() {
        $widget_ops = array('classname' => 'widget_recent_comments', 'description' => __( 'The most recent comments' ) );
        $this->WP_Widget('recent-comments', __('Recent Comments'), $widget_ops);
        $this->alt_option_name = 'widget_recent_comments';
        if ( is_active_widget(false, false, $this->id_base) )
        add_action( 'wp_head', array(&$this, 'recent_comments_style') );
        add_action( 'comment_post', array(&$this, 'flush_widget_cache') );
        add_action( 'transition_comment_status', array(&$this, 'flush_widget_cache') );
    }

自定义仪表板CSS

 /* Change WordPress dashboard CSS */
function custom_admin_styles() {
    echo '<style type="text/css">#wphead{background:#069}</style>';
}
add_action('admin_head', 'custom_admin_styles');
 

您可以在标签之间的CSS上添加任何更改.

Custom Dashboard CSS

/* Change WordPress dashboard CSS */
function custom_admin_styles() {
    echo '<style type="text/css">#wphead{background:#069}</style>';
}
add_action('admin_head', 'custom_admin_styles');

You can add any changes to the css between the tags.

删除私有和受保护的前缀

此功能删除了" Privite:"标记为私人的帖子和页面的前缀.对于仅对登录的用户或组可见的内容有用.

 function the_title_trim($title) {
$title = attribute_escape($title);
$findthese = array(
    '#Protected:#',
    '#Private:#'
);
$replacewith = array(
    '', // What to replace "Protected:" with
    '' // What to replace "Private:" with
);
$title = preg_replace($findthese, $replacewith, $title);
return $title;
}
add_filter('the_title', 'the_title_trim');
 

编辑::已更新,其中也删除了受保护的内容.

Remove Private and Protected Prefix

This function removes the "Privite:" prefix from posts and pages marked private. Useful for content only visible to logged in users or groups.

function the_title_trim($title) {
$title = attribute_escape($title);
$findthese = array(
    '#Protected:#',
    '#Private:#'
);
$replacewith = array(
    '', // What to replace "Protected:" with
    '' // What to replace "Private:" with
);
$title = preg_replace($findthese, $replacewith, $title);
return $title;
}
add_filter('the_title', 'the_title_trim');

EDIT: Updated to include the removal of Protected: as well.

自定义摘录长度

 function excerpt($num) {
    $limit = $num+1;
    $excerpt = explode(' ', get_the_excerpt(), $limit);
    array_pop($excerpt);
    $excerpt = implode(" ",$excerpt)."... (<a href='" .get_permalink($post->ID) ." '>Read more</a>)";
    echo $excerpt;
}
 

通过编写主题来限制显示摘录的长度:excerpt('20');

示例:<?php excerpt('22'); ?> 这将摘录限制为22个字符.

摘录将与... (Read More)

Custom excerpt length

function excerpt($num) {
    $limit = $num+1;
    $excerpt = explode(' ', get_the_excerpt(), $limit);
    array_pop($excerpt);
    $excerpt = implode(" ",$excerpt)."... (<a href='" .get_permalink($post->ID) ." '>Read more</a>)";
    echo $excerpt;
}

Limit the length of the displayed excerpt by writing in the theme: excerpt('20');

Example: <?php excerpt('22'); ?> This will limit the excerpt to 22 characters.

The excerpt will be interupted with ... (Read More)

将父页面标签添加到body_class

 /***************************************************************
* Function body_class_section
* Add the top level page to the body class for coloured sections
***************************************************************/

add_filter('body_class','body_class_section');

function body_class_section($classes) {
    global $wpdb, $post;
    if (is_page()) {
        if ($post->post_parent) {
            $parent  = end(get_post_ancestors($current_page_id));
        } else {
            $parent = $post->ID;
        }
        $post_data = get_post($parent, ARRAY_A);
        $classes[] = 'section-' . $post_data['post_name'];
    }
    return $classes;
}
 

此过滤器基于当前页面的最高级别父级添加唯一的正文类.我将其用于网站各部分具有特定颜色或布局的网站.它最适合基于页面的网站. CSS示例:

 .section-about { background: red; }
.section-portfolio { background: blue; }
 

您的主题还必须使用body_class函数.

修复嵌入的Flash对象

 /***************************************************************
* Function my_oembed_wmode
* Fix oEmbed window mode for flash objects
***************************************************************/

add_filter('embed_oembed_html', 'my_oembed_wmode', 1);

function my_oembed_wmode( $embed ) {
    if ( strpos( $embed, '<param' ) !== false ) {
        $embed = str_replace( '<embed', '<embed wmode="transparent" ', $embed );
        $embed = preg_replace( '/param>/', 'param><param name="wmode" value="transparent" />', $embed, 1);
    }
    return $embed;
}
 

过去,oEmbed Flash对象与下拉导航菜单发生冲突,我遇到了问题.该过滤器通过向嵌入内容添加透明窗口模式来解决该问题.

从"管理员"页面列表中删除"评论"列

 /***************************************************************
* Function custom_pages_columns
* Remove "comments" from pages overview (rarely use comments on pages)
***************************************************************/

add_filter('manage_pages_columns', 'custom_pages_columns');

function custom_pages_columns($defaults) {
    unset($defaults['comments']);
    return $defaults;
}
 

我几乎不使用页面注释,这有助于使WordPress仪表板中的内容保持整洁.

Add parent page slug to body_class

/***************************************************************
* Function body_class_section
* Add the top level page to the body class for coloured sections
***************************************************************/

add_filter('body_class','body_class_section');

function body_class_section($classes) {
    global $wpdb, $post;
    if (is_page()) {
        if ($post->post_parent) {
            $parent  = end(get_post_ancestors($current_page_id));
        } else {
            $parent = $post->ID;
        }
        $post_data = get_post($parent, ARRAY_A);
        $classes[] = 'section-' . $post_data['post_name'];
    }
    return $classes;
}

This filter adds a unique body class based on the highest level parent of the current page. I use this for sites that have specific colours or layouts for each section of the site. It works best with sites based around pages. CSS examples:

.section-about { background: red; }
.section-portfolio { background: blue; }

Your theme must also make use of the body_class function.

Fix oEmbed flash objects

/***************************************************************
* Function my_oembed_wmode
* Fix oEmbed window mode for flash objects
***************************************************************/

add_filter('embed_oembed_html', 'my_oembed_wmode', 1);

function my_oembed_wmode( $embed ) {
    if ( strpos( $embed, '<param' ) !== false ) {
        $embed = str_replace( '<embed', '<embed wmode="transparent" ', $embed );
        $embed = preg_replace( '/param>/', 'param><param name="wmode" value="transparent" />', $embed, 1);
    }
    return $embed;
}

I have had problems in the past where oEmbed Flash objects collide with drop down navigation menus. This filter fixes that problem by adding a transparent window mode to the embeds.

Remove the "comments" column from Admin page list

/***************************************************************
* Function custom_pages_columns
* Remove "comments" from pages overview (rarely use comments on pages)
***************************************************************/

add_filter('manage_pages_columns', 'custom_pages_columns');

function custom_pages_columns($defaults) {
    unset($defaults['comments']);
    return $defaults;
}

I hardly ever make use of commenting on pages and this helps keep things tidy in the WordPress dashboard.

启用数字分页

测试于: Wordpress 3.0.1

 /* Numeric Pagination ********************************************/

function numeric_pagination ($pageCount = 9, $query = null) {

 if ($query == null) {
  global $wp_query;
  $query = $wp_query;
 }

 if ($query->max_num_pages <= 1) {
  return;
 }

 $pageStart = 1;
 $paged = $query->query_vars['paged'];

 // set current page if on the first page
 if ($paged == null) {
  $paged = 1;
 }

 // work out if page start is halfway through the current visible pages and if so move it accordingly
 if ($paged > floor($pageCount / 2)) {
  $pageStart = $paged - floor($pageCount / 2);
 }

 if ($pageStart < 1) {
  $pageStart = 1;
 }

 // make sure page start is
 if ($pageStart + $pageCount > $query->max_num_pages) {
  $pageCount = $query->max_num_pages - $pageStart;
 }

?>
 <div id="archive_pagination">
<?php
 if ($paged != 1) {
?>
 <a href="<?php echo get_pagenum_link(1); ?>" class="numbered page-number-first"><span>&lsaquo; <?php _e('<< First', 'global'); ?></span></a>
<?php
 }
 // first page is not visible...
 if ($pageStart > 1) {
  //echo 'previous';
 }
 for ($p = $pageStart; $p <= $pageStart + $pageCount; $p ++) {
  if ($p == $paged) {
?>
  <span class="numbered page-number-<?php echo $p; ?> current-numeric-page"><?php echo $p; ?></span>
<?php } else { ?>
  <a href="<?php echo get_pagenum_link($p); ?>" class="numbered page-number-<?php echo $p; ?>"><span><?php echo $p; ?></span></a>

<?php
  }
 }
 // last page is not visible
 if ($pageStart + $pageCount < $query->max_num_pages) {
  //echo "last";
 }
 if ($paged != $query->max_num_pages) {
?>
  <a href="<?php echo get_pagenum_link($query->max_num_pages); ?>" class="numbered page-number-last"><span><?php _e('>> Last', 'global'); ?> &rsaquo;</span></a>
<?php } ?>

 </div>
 

Enable Numeric Pagination

Tested on: Wordpress 3.0.1

/* Numeric Pagination ********************************************/

function numeric_pagination ($pageCount = 9, $query = null) {

 if ($query == null) {
  global $wp_query;
  $query = $wp_query;
 }

 if ($query->max_num_pages <= 1) {
  return;
 }

 $pageStart = 1;
 $paged = $query->query_vars['paged'];

 // set current page if on the first page
 if ($paged == null) {
  $paged = 1;
 }

 // work out if page start is halfway through the current visible pages and if so move it accordingly
 if ($paged > floor($pageCount / 2)) {
  $pageStart = $paged - floor($pageCount / 2);
 }

 if ($pageStart < 1) {
  $pageStart = 1;
 }

 // make sure page start is
 if ($pageStart + $pageCount > $query->max_num_pages) {
  $pageCount = $query->max_num_pages - $pageStart;
 }

?>
 <div id="archive_pagination">
<?php
 if ($paged != 1) {
?>
 <a href="<?php echo get_pagenum_link(1); ?>" class="numbered page-number-first"><span>&lsaquo; <?php _e('<< First', 'global'); ?></span></a>
<?php
 }
 // first page is not visible...
 if ($pageStart > 1) {
  //echo 'previous';
 }
 for ($p = $pageStart; $p <= $pageStart + $pageCount; $p ++) {
  if ($p == $paged) {
?>
  <span class="numbered page-number-<?php echo $p; ?> current-numeric-page"><?php echo $p; ?></span>
<?php } else { ?>
  <a href="<?php echo get_pagenum_link($p); ?>" class="numbered page-number-<?php echo $p; ?>"><span><?php echo $p; ?></span></a>

<?php
  }
 }
 // last page is not visible
 if ($pageStart + $pageCount < $query->max_num_pages) {
  //echo "last";
 }
 if ($paged != $query->max_num_pages) {
?>
  <a href="<?php echo get_pagenum_link($query->max_num_pages); ?>" class="numbered page-number-last"><span><?php _e('>> Last', 'global'); ?> &rsaquo;</span></a>
<?php } ?>

 </div>

通过删除WWW来缩短您的短链接

测试于: Wordpress 3.0.1

如果您在域中包含www.,请缩短您的短链接.通过 scratch99.com :

 add_filter('get_shortlink','sjc_alter_shortlink');
function sjc_alter_shortlink($shortlink) {
    $shortlink = preg_replace('/^(https?:\/\/)?(www\.)/','$1',$shortlink);
    return $shortlink;
}
 

Make your Shortlinks Shorter by Removing WWW

Tested on: Wordpress 3.0.1

Make your shortlinks shorter if you include www. in your domain. Via scratch99.com:

add_filter('get_shortlink','sjc_alter_shortlink');
function sjc_alter_shortlink($shortlink) {
    $shortlink = preg_replace('/^(https?:\/\/)?(www\.)/','$1',$shortlink);
    return $shortlink;
}

检查帖子是否包含嵌入内容.

检查帖子是否包含嵌入的内容,是否使用当前帖子的ID在循环内工作,或者可以传递ID以确定要检查嵌入内容的帖子.

 function has_embed( $post_id = false ) {
    if( !$post_id ) $post_id = get_the_ID();
    else $post_id = absint( $post_id );
    if( !$post_id ) return false;

    $post_meta = get_post_custom_keys( $post_id );
    $post_meta = array_map( 'trim' , $post_meta );

    foreach( $post_meta as $meta ) {
        if( '_oembed' != substr( $meta , 0 , 7 ) )
            continue;
        return true;
    }
    return false;
}
 

您将以与检查帖子是否带有标签相同的方式使用该功能.

 if( has_embed() ) {
   // do whatever
}
 

如果发现嵌入,函数将返回true,失败则返回false.

Check if a post has embedded content.

Check if a post has embedded content, works inside the loop using the current post's ID, or alternatively can be passed an ID to determine the post to check for embedded content.

function has_embed( $post_id = false ) {
    if( !$post_id ) $post_id = get_the_ID();
    else $post_id = absint( $post_id );
    if( !$post_id ) return false;

    $post_meta = get_post_custom_keys( $post_id );
    $post_meta = array_map( 'trim' , $post_meta );

    foreach( $post_meta as $meta ) {
        if( '_oembed' != substr( $meta , 0 , 7 ) )
            continue;
        return true;
    }
    return false;
}

You'd use the function in the same way you check if a post has a tag..

if( has_embed() ) {
   // do whatever
}

Function returns true if an embed is found, false on fail.

在首页上显示来自不同自定义帖子类型的帖子

通过将帖子底部的以下代码放到functions.php文件中,您可以让wordpress自动显示来自您创建的不同自定义帖子类型的帖子.当前默认情况下,wordpress仅显示属于默认"posts"的帖子.帖子类型.

在下面提供的示例中,您将需要更改以下部分:

 $query->set( 'post_type', array('post', 'page', 'services', 'attachment'));
 

使用您想要包含在首页帖子列表结果中的自定义帖子类型.在这种情况下,我们要求wordpress将属于默认"post"信息的所有帖子返回给我们.和"页面"post_type,然后要求wordpress也包括我们为"服务"创建的自定义帖子类型.最后是默认的wordpress发布类型" attachment"这只是意味着只要将任何内容添加到媒体库中,它就会自动在首页上显示为单独的条目.

 // CUSTOM HOMEPAGE POST LIST INCLUDING DIFFERENT POST_TYPES
// make sure to edit the post types you wanted included in the list below
add_filter( 'pre_get_posts', 'my_homepage_post_list' );
function my_homepage_post_list ( $query ) {
    if ( is_home() && false == $query->query_vars['suppress_filters'] )
        $query->set( 'post_type', array('post', 'page', 'services', 'attachment'));
    return $query;
}
 

您还可以在不同位置使用此自定义查询,例如通过类似这样的自定义Feed中

 if (( is_home() && false == $query->query_vars['suppress_filters'] ) || is_feed())
 

Display Posts from Different Custom Post Types on homepage

By dropping the following code on the bottom of this post into your functions.php file you can get wordpress to automatically display posts from different custom post types you have created. Currently by default wordpress only display posts which belong to the default "posts" post type.

In the example provided below you will need to change the section which calls:

$query->set( 'post_type', array('post', 'page', 'services', 'attachment'));

With your own custom post types which you would like to include in the homepage post list results. In this case we are asking wordpress to return to us all posts belonging to the default "post" and "page" post_type then asking wordpress to also include the custom post type we created for "services" and finally the default wordpress post type of "attachment" which just means that anytime something is added to the media library it will automatically get displayed on the homepage as a separate entry.

// CUSTOM HOMEPAGE POST LIST INCLUDING DIFFERENT POST_TYPES
// make sure to edit the post types you wanted included in the list below
add_filter( 'pre_get_posts', 'my_homepage_post_list' );
function my_homepage_post_list ( $query ) {
    if ( is_home() && false == $query->query_vars['suppress_filters'] )
        $query->set( 'post_type', array('post', 'page', 'services', 'attachment'));
    return $query;
}

You can also utilize this custom query in different locations, such as in a custom feed through something like this

if (( is_home() && false == $query->query_vars['suppress_filters'] ) || is_feed())

删除默认字段联系信息用户个人资料,并将其替换为更有用的内容

上面已经提到了此功能的第二部分,但尚未删除默认字段-AIM,Yahoo IM和Jabber/Google Talk-

 function update_contact_methods( $contactmethods ) {

// Remove annoying and unwanted default fields  
unset($contactmethods['aim']);  
unset($contactmethods['jabber']);  
unset($contactmethods['yim']);  

// Add new fields  
$contactmethods['phone'] = 'Phone';  
$contactmethods['mobile'] = 'Mobile';  
$contactmethods['address'] = 'Address';  

return $contactmethods;
}
add_filter('user_contactmethods', 'update_contact_methods');
 

当然,您可以在"添加新字段"下添加任意数量的字段(请参见本主题前面的示例)

Remove default fields contact info user profile and replace them with something more usable

The second part of this function has already been mentioned above, but removing the default fields - AIM, Yahoo IM and Jabber/Google Talk - not yet:

function update_contact_methods( $contactmethods ) {

// Remove annoying and unwanted default fields  
unset($contactmethods['aim']);  
unset($contactmethods['jabber']);  
unset($contactmethods['yim']);  

// Add new fields  
$contactmethods['phone'] = 'Phone';  
$contactmethods['mobile'] = 'Mobile';  
$contactmethods['address'] = 'Address';  

return $contactmethods;
}
add_filter('user_contactmethods', 'update_contact_methods');

Of course you can add as many fields as you want (see previous examples earlier in this thread) under "Add new fields"

预填充帖子类型

这里是该收藏品之一.

 ////////////////////////////////////////////////////////////////////////////////////
// This auto populates post types and posts.
///////////////////////////////////////////////////////////////////////////////////

add_filter( 'default_content', 'my_editor_content' );

function my_editor_content( $content ) {

    global $post_type;

    switch( $post_type ) {
        case 'your_post_type_here': //auto populate
            $content = 'The content you want to pre-populate the post type with.';
break;
     }

    return $content;
}
 

当您需要一遍又一遍地发布相同信息时,这可能会派上用场.

Pre-populating post types

Here is one for this collection.

////////////////////////////////////////////////////////////////////////////////////
// This auto populates post types and posts.
///////////////////////////////////////////////////////////////////////////////////

add_filter( 'default_content', 'my_editor_content' );

function my_editor_content( $content ) {

    global $post_type;

    switch( $post_type ) {
        case 'your_post_type_here': //auto populate
            $content = 'The content you want to pre-populate the post type with.';
break;
     }

    return $content;
}

This can come in handy for when you need to post the same info over and over again with slight differences.

自动包含Google Analytics(分析)代码

测试于: Wordpress 3.1 RC3

自WordPress 2.3.0以来,我一直在所有网站上使用此脚本...它只是将标准的Google跟踪脚本添加到页脚中.

 // Add Google Analytics Tracking Code
function add_google_analytics() {
?>
<script type="text/javascript">
    var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
    document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
    try {
        var pageTracker = _gat._getTracker("UA-XXXXXXX-X");
        pageTracker._trackPageview();
    } catch(err) {}</script>
<?php
}

add_action('wp_footer', 'add_google_analytics');
 

只需确保将UA-XXXXXXX-X替换为您自己的Google跟踪代码...

Auto Include Google Analytics Code

Tested on: Wordpress 3.1 RC3

I've been using this script on all of my sites since WordPress 2.3.0 ... it just adds the standard Google tracking scripts to the footer.

// Add Google Analytics Tracking Code
function add_google_analytics() {
?>
<script type="text/javascript">
    var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
    document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
    try {
        var pageTracker = _gat._getTracker("UA-XXXXXXX-X");
        pageTracker._trackPageview();
    } catch(err) {}</script>
<?php
}

add_action('wp_footer', 'add_google_analytics');

Just be sure to replace UA-XXXXXXX-X with your own Google tracking code...

列出所有常量以供参考和调试

测试于: Wordpress 3.0.1

仅当您是登录用户时才会显示信息

 if ( is_user_logged_in() ) {
    print('<pre>');
    print_r( @get_defined_constants() );
    print('</pre>');
}
 

此处是带有可选过滤器的版本,该过滤器将部分匹配常量名称和值:

 function constants($filter = false) {

        $constants = get_defined_constants();

        if( $filter ) {

            $temp = array();

            foreach ( $constants as $key => $constant )
                if( false !== stripos( $key, $filter ) || false !== stripos( $constant, $filter ) )
                    $temp[$key] = $constant;

            $constants = $temp;
        }

        ksort( $constants );
        var_dump( $constants );
    }
 

List all constants for information and debugging

Tested on: Wordpress 3.0.1

Will only display the information if you are a logged in user

if ( is_user_logged_in() ) {
    print('<pre>');
    print_r( @get_defined_constants() );
    print('</pre>');
}

Here is version with optional filter that will partially match constant names and values:

function constants($filter = false) {

        $constants = get_defined_constants();

        if( $filter ) {

            $temp = array();

            foreach ( $constants as $key => $constant )
                if( false !== stripos( $key, $filter ) || false !== stripos( $constant, $filter ) )
                    $temp[$key] = $constant;

            $constants = $temp;
        }

        ksort( $constants );
        var_dump( $constants );
    }

在您的本地主机上添加自动更新/插件安装程序

 define ('FS_METHOD', 'direct');
 

将其放在您的wp-config.php中.

Add auto-update/plugin-installer on you localhost

define ('FS_METHOD', 'direct');

Put this in your wp-config.php.

更改默认的作者子弹

将其放入您的函数中以将默认的Author Slug更改为所需的内容,
只需将"卖家"更改为所需的子弹.

 // Change URL Slug from Author to Sellers
function new_author_base() {
    global $wp_rewrite;
    $author_slug = 'sellers';
    $wp_rewrite->author_base = $author_slug;
}
add_action('init', 'new_author_base');
 

Change default Author Slug

Put this in your functions to change the default Author Slug to whatever you want,
just change the "sellers" to the slug you want.

// Change URL Slug from Author to Sellers
function new_author_base() {
    global $wp_rewrite;
    $author_slug = 'sellers';
    $wp_rewrite->author_base = $author_slug;
}
add_action('init', 'new_author_base');

在所见即所得编辑器中添加"下一页"按钮

 add_filter('mce_buttons','wysiwyg_editor');
function wysiwyg_editor($mce_buttons) {
    $pos = array_search('wp_more',$mce_buttons,true);
    if ($pos !== false) {
        $tmp_buttons = array_slice($mce_buttons, 0, $pos+1);
        $tmp_buttons[] = 'wp_page';
        $mce_buttons = array_merge($tmp_buttons, array_slice($mce_buttons, $pos+1));
    }
    return $mce_buttons;
}
 

Add "Next-page"-button in WYSIYG-editor

add_filter('mce_buttons','wysiwyg_editor');
function wysiwyg_editor($mce_buttons) {
    $pos = array_search('wp_more',$mce_buttons,true);
    if ($pos !== false) {
        $tmp_buttons = array_slice($mce_buttons, 0, $pos+1);
        $tmp_buttons[] = 'wp_page';
        $mce_buttons = array_merge($tmp_buttons, array_slice($mce_buttons, $pos+1));
    }
    return $mce_buttons;
}

向TinyMCE编辑器添加自定义样式

有时,用户和客户端对于其内容在编辑器中的显示方式以及在前端中的显示方式感到困惑.将主要样式表中的几行相关代码复制到新的tinymce.css中会很有帮助:

 function custom_mce_css($wp) {
    return $wp .= ',' . get_bloginfo('stylesheet_directory') . '/css/tinymce.css';
}
add_filter( 'mce_css', 'custom_mce_css' );
 

Add custom styles to TinyMCE editor

Sometimes users and clients get confused about how their content is displayed in the editor versus how it is displayed on the front-end. Copying just a few relevant lines from your main stylesheet into your new tinymce.css can help a lot:

function custom_mce_css($wp) {
    return $wp .= ',' . get_bloginfo('stylesheet_directory') . '/css/tinymce.css';
}
add_filter( 'mce_css', 'custom_mce_css' );

将图形和插图标题用作标题

测试于: WordPress 3.1.3

(向WP Engineer致谢: http://wpengineer.com/917/filter-caption- shortcode-in-wordpress/)

 function mytheme_caption( $attr, $content = null ) {
    $output = apply_filters( 'img_caption_shortcode', '', $attr, $content );
    if ( $output != '' )
        return $output;

    extract( shortcode_atts ( array(
    'id' => '',
    'align' => 'alignnone',
    'width'=> '',
    'caption' => ''
    ), $attr ) );

    if ( 1 > (int) $width || empty( $caption ) )
        return $content;

    if ( $id ) $id = 'id="' . $id . '" ';

    return '<figure ' . $id . 'class="wp-caption ' . $align . '" style="width: ' . $width . 'px">'
. do_shortcode( $content ) . '<figcaption class="wp-caption-text">' . $caption . '</figcaption></figure>';
}

add_shortcode( 'wp_caption', 'mytheme_caption' );
add_shortcode( 'caption', 'mytheme_caption' );
 

Use figure and figcaption for captions

Tested on: WordPress 3.1.3

(Credits to WP Engineer: http://wpengineer.com/917/filter-caption-shortcode-in-wordpress/)

function mytheme_caption( $attr, $content = null ) {
    $output = apply_filters( 'img_caption_shortcode', '', $attr, $content );
    if ( $output != '' )
        return $output;

    extract( shortcode_atts ( array(
    'id' => '',
    'align' => 'alignnone',
    'width'=> '',
    'caption' => ''
    ), $attr ) );

    if ( 1 > (int) $width || empty( $caption ) )
        return $content;

    if ( $id ) $id = 'id="' . $id . '" ';

    return '<figure ' . $id . 'class="wp-caption ' . $align . '" style="width: ' . $width . 'px">'
. do_shortcode( $content ) . '<figcaption class="wp-caption-text">' . $caption . '</figcaption></figure>';
}

add_shortcode( 'wp_caption', 'mytheme_caption' );
add_shortcode( 'caption', 'mytheme_caption' );