如何在Wordpress中使用我自己的自定义会话值？

编辑:"以下任何插件均不可用,因此请使用插件代替: WordPress会话插件"

有一个很好的WordPress插件,改编自CodeIgniter会话类: WP会话插件.

激活插件时,您可以从主题中的任何位置开始使用$session对象($session对象只要是全局对象).例如,要将$ session对象用于header.php文件,只需添加以下代码:

 global $session;
 

如果您是插件开发人员,并且希望将其与您的插件配合使用,则还可以在软件包中找到独立版本.插件文档为插件开发人员提供了有关如何适应项目的更多信息.

这对于主题和插件开发人员都是有用的功能.

您可以添加会话数据,如下所示:

 // One value
$session->set_userdata( 'username', 'john' );

// Passing array
$array = array(
    'username' => 'john',
    'email'    => '[email protected]'
);

$session->set_userdata( $array );
 

要检索会话数据:

 $session->userdata( 'username' );
 

要获取所有会话数据:

 $session->all_userdata(); // returns array
 

要从会话中删除一项:

 $session->unset_userdata( 'username' );
 

要删除会话中的更多项目:

 $array = array(
    'username' => '',
    'email'    => ''
);
$session->unset_userdata( $array );
 

您还可以使用 Flashdata ,这是仅可用于下一个服务器请求的会话数据,然后会自动清除.当您将它们用于信息或状态消息(例如"产品已删除")时,这些功能非常有用.

 // Add Flashdata
$session->set_flashdata( 'item', 'value' );

// Retrieve Flashdata
$session->flashdata( 'item' );

// Preserving flashdata 
// (if you need to preserve flashdata through an additional request, 
// you can use this function):
$session->keep_flashdata( 'item' );
 

要销毁会话:

 $session->sess_destroy();
 

该插件还支持简码.您可以在帖子或页面上打印任何会话数据:

 [session key="username"]
 

达到第二个键:

 [session key="user_data" sec_key="display_name"]
 

我希望这对某人有帮助.

EDIT: "THE PLUGIN BELOW ISN'T AVAILABLE ANYMORE, SO PLEASE USE THAT PLUGIN INSTEAD: WordPress Session Plugin"

There is a good WordPress Plugin adapted from CodeIgniter Session class: WP Sessions Plugin.

When you activate the plugin, you can start to use $session object from anywhere in your theme ($session object as long as global). For instance, to use $session object into header.php file, simply add this code:

global $session;

If you are a plugin developer and you want to adapt this plugin with yours, you can find standalone version in the package as well. Documentation of the plugin gives more information for plugin developers about how to adapt to your project.

Here is some useful functions for both theme and plugin developers.

You can add session data like this:

// One value
$session->set_userdata( 'username', 'john' );

// Passing array
$array = array(
    'username' => 'john',
    'email'    => '[email protected]'
);

$session->set_userdata( $array );

To retrieve session data:

$session->userdata( 'username' );

To get all session data:

$session->all_userdata(); // returns array

To remove one item from session:

$session->unset_userdata( 'username' );

To remove more items from session:

$array = array(
    'username' => '',
    'email'    => ''
);
$session->unset_userdata( $array );

You can also use Flashdata which is session data that will only be available for the next server request, are then automatically cleared. These can be very useful when you use them for informational or status messages (e.g. “Product has been deleted”).

// Add Flashdata
$session->set_flashdata( 'item', 'value' );

// Retrieve Flashdata
$session->flashdata( 'item' );

// Preserving flashdata 
// (if you need to preserve flashdata through an additional request, 
// you can use this function):
$session->keep_flashdata( 'item' );

To destroy session:

$session->sess_destroy();

The plugin also supports shortcodes. You can print any session data on your posts or pages:

[session key="username"]

To reach second key:

[session key="user_data" sec_key="display_name"]

I hope this helps for someone.

WordPress不使用会话,这就是您的会话变量不起作用的原因.

事实上,如果定义了某些变量, WordPress实际上会破坏$_SESSION使其保持无状态.

但是,如果您真的想使用会话,请尝试在session_start()文件的开头添加wp-config.php.每当WP启动时,这将(有希望地)启动会话,因此您将能够在系统中的其他位置设置和读取您的$_SESSION变量.

WordPress doesn't use sessions, that's why your session variables aren't working.

As a matter of fact, if certain variables are defined, WordPress will actually destroy $_SESSION to keep itself stateless.

But if you really want to use sessions, try adding session_start() at the beginning of your wp-config.php file. This will (hopefully) start sessions whenever WP starts up, so you'll then be able to set and read your $_SESSION variables elsewhere in the system.

WordPress确实支持.

您需要在functions.php

 if ( ! session_id() ) {
    session_start();
}
 

Wordpress does support it.

You need to add following lines at the top of functions.php

if ( ! session_id() ) {
    session_start();
}