I config the multi-language setting dynamically using the locale
filter. Which fetch the sub-domain name to determine the language.
function load_custom_language($locale) {
// get the locale code according to the sub-domain name.
// en.mysite.com => return `en`
// zh.mysite.com => return `zh_CN`
// tw.mysite.com => return `zh_TW`
// etc..
}
add_filter('locale', 'load_custom_language');
That works for the index page, but when I redirect to another page, because of the settings of home
and siteurl
, it always redirects my site to the original one (www.mysite.com
).
So I'm curious to find a dynamic way to filter the home
and siteurl
according to the request, because I might use more than one sub-domain for mysite and I have only one settings for the two settings.
You can override the admin settings in the wp-config.php file. So if you want something dynamic, the following should work:
//presumes server is set up to deliver over https
define('WP_SITEURL', 'htts://' . $_SERVER['HTTP_HOST']);
define('WP_HOME', 'htts://' . $_SERVER['HTTP_HOST']);
This needs to added before the line
require_once(ABSPATH . 'wp-settings.php');
or else you may have problems with some content using the wrong URLs, especially theme files.
I've found another pretty way to achieve the work:
After I checked for the source code of the kernel, I found that there are distinct filters called option_xxx
on each options.
So, for my task, I tried to use the option_siteurl
and option_home
filter to hold that options to load, just to prevent the option to load, maintaining the SERVER_NAME
it has:
function replace_siteurl($val) {
return 'http://'.$_SERVER['HTTP_HOST'];
}
add_filter('option_siteurl', 'replace_siteurl');
add_filter('option_home', 'replace_siteurl');
Using this way, it has no need to change the wp_config.php
file, and can be easily add to a theme or a plugin.
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