home_url（）和site_url（）有什么区别

您一次要问两个问题:

1. home_url()和site_url()之间有什么区别?
2. 如何让WordPress返回没有安装子目录的URL根目录?

这是答案,我向WordPress的核心开发人员安德鲁·纳辛(Andrew Nacin)确认,并进行了一些服务器测试以确认安德鲁告诉我的内容.

问题1

在wp-admin的"常规">"设置"中,home_url()引用标有"站点地址(URL)"的字段. 令人困惑,是吗?是的,它说的是"站点地址",因此您可能会假设site_url(),但是您会错了.运行您自己的测试,您会看到. (您可以在主题的functions.php顶部使用site_url()和home_url()值临时放置一个home_url()字段. )

与此同时,site_url()引用"常规">"设置"中标记为" WordPress地址(URL)"的字段.

因此,如果要引用物理路径,例如在URL上调用插件的文件夹路径以加载图像,或调用主题的文件夹路径以加载图像,则实际上应该使用其他功能对于这些-查看plugins_url()和get_template_directory_uri().

site_url()将始终是您可以通过以下方式添加到站点的位置:最后通过粘贴/wp-admin,而home_url()不能可靠地定位在这个位置.

home_url()将是通过设置常规>设置"站点地址(URL)"字段来设置主页的位置.

问题2

因此,如果我将博客放在http://example.com/blog中,并且example.com只是一些静态网站,组合主题,那么这将是一个符合您问题的方案.在这种情况下,我将使用以下代码段:

 <?php
function getDomain() {
    $sURL    = site_url(); // WordPress function
    $asParts = parse_url( $sURL ); // PHP function

    if ( ! $asParts )
      wp_die( 'ERROR: Path corrupt for parsing.' ); // replace this with a better error result

    $sScheme = $asParts['scheme'];
    $nPort   = $asParts['port'];
    $sHost   = $asParts['host'];
    $nPort   = 80 == $nPort ? '' : $nPort;
    $nPort   = 'https' == $sScheme AND 443 == $nPort ? '' : $nPort;
    $sPort   = ! empty( $sPort ) ? ":$nPort" : '';
    $sReturn = $sScheme . '://' . $sHost . $sPort;

    return $sReturn;
}
 

You are asking two questions at once:

1. What's the difference between home_url() and site_url()?
2. How do I get WordPress to return the URL root without the subdirectory where it's installed?

Here are the answers, and I confirmed with Andrew Nacin, a core developer of WordPress, as well as ran some server tests to confirm what Andrew told me.

Question # 1

In General > Settings of wp-admin, home_url() references the field labeled "Site Address (URL)". Confusing, huh? Yeah, it says "Site Address" so you might assume site_url(), but you'd be wrong. Run your own test and you'll see. (You can temporarily drop an echo H1 field with site_url() and home_url() values at the top of your your theme's functions.php.)

Meanwhile, site_url() references the field labeled "WordPress Address (URL)" in General > Settings.

So, if you're wanting to reference where a physical path might be such as calling a plugin's folder path on the URL to load an image, or calling a theme's folder path to load an image, you should actually use other functions for those - look at plugins_url() and get_template_directory_uri().

The site_url() will always be the location where you can reach the site by tacking on /wp-admin on the end, while home_url() would not reliably be this location.

The home_url() would be where you have set your homepage by setting General > Settings "Site Address (URL)" field.

Question # 2

So, if I have placed my blog in http://example.com/blog, and example.com is just some static site where I have like a portfolio theme, then this would be a scenario that lines up with your question. In such a case, then I would use this snippet of code:

<?php
function getDomain() {
    $sURL    = site_url(); // WordPress function
    $asParts = parse_url( $sURL ); // PHP function

    if ( ! $asParts )
      wp_die( 'ERROR: Path corrupt for parsing.' ); // replace this with a better error result

    $sScheme = $asParts['scheme'];
    $nPort   = $asParts['port'];
    $sHost   = $asParts['host'];
    $nPort   = 80 == $nPort ? '' : $nPort;
    $nPort   = 'https' == $sScheme AND 443 == $nPort ? '' : $nPort;
    $sPort   = ! empty( $sPort ) ? ":$nPort" : '';
    $sReturn = $sScheme . '://' . $sHost . $sPort;

    return $sReturn;
}

如果要将WP安装在目录中,但将站点安装在域根目录下,则需要将index.php主文件移至域根目录,然后编辑require语句以指向目录.

此处概述了此过程:为WordPress提供自己的目录.

If you want WP installed in a directory but the site home on your domain root, you need to move the main index.php file out to your domain root and edit the require statement to point within your directory.

This process is outlined here: Giving WordPress Its Own Directory.

site_url()和home_url()函数相似,可能会导致工作方式混乱.

site_url()函数在数据库的siteurl表中检索wp_options的值.

这是WordPress核心文件的URL.
如果您的核心文件位于Web服务器上的子目录/wordpress中,则该值为http://example.com/wordpress.

home_url()函数在数据库的siteurl表中检索wp_options的值.

这是您希望人们访问以查看您的WordPress网站的地址.

如果您的WordPress核心文件位于/wordpress中,但是您希望网站URL为http://example.com,则起始值应为http://example.com.

The site_url() and home_url() functions are similar and can lead to confusion in how they work.

The site_url() function retrieves the value value for siteurl in the wp_options table in your database.

This is the URL to the WordPress core files.
If your core files exist in a subdirectory /wordpress on your web server, the value would be http://example.com/wordpress.

The home_url() function retrieves the value for home in the wp_options table in your database.

This is the address you want people to visit to view your WordPress web site.

If your WordPress core files exist in /wordpress, but you want your web site URL to be http://example.com the home value should be http://example.com.

要回答第二个问题:

问:如果正确,那么我可以让wordpress返回 http://example.com/吗?

您不能这样做,除非您采取为WordPress提供其自己的目录步骤.使用此方法意味着您将WordPress核心文件放入/blog 或/WordPress ,然后将index.php 放入您的根目录.

如果您决定将WordPress放在其自己的目录中,则可以使用 home_url()进入index.php 和 site_url()获取核心文件等.

推荐人:
site_url 的法典
home_url 的法典
提供Wordpress自己目录的法典

To answer your second question:

Q: If that's correct, then can I get wordpress to return http://example.com/ ?

You can't, unless you take the Giving WordPress its own directory steps. Using this means you put WordPress core files into /blog or /WordPress and then the index.php into your root.

If you decide to put WordPress inside its own directory then you would use home_url() for going to index.php and site_url() for getting core files and such.

Refrences:
Codex for site_url
Codex for home_url
Codex for Giving Wordpress Own Directory

获取没有任何子目录的网站网址的最简单方法(改为 http://example.com/( http://example.com/blog )中,只需使用反斜杠/

例如,如果您输入:

 <a href="/">domain url</a>
 

它将创建一个链接到您的域

The easiest way to get the site url without any sub-directories ( http://example.com/ instead of http://example.com/blog ), just use the backslash /

For example, if you type:

<a href="/">domain url</a>

It will create a link that goes to your domain