The location of your class which extends from wp_xmlrpc_server (e.g. Webeo_XMLRPC) depends on your extension. Is it written as a plugin or inside a theme?

Plugin
If you have written your extension as a plugin, you should place the file in the plugin directory and include the file on the plugins_loaded action hook.

For example:

// wp-content/plugins/my-extension/my-extension.php

add_action('plugins_loaded', 'webeo_plugin_setup');
function webeo_plugin_setup() {
    // The file should be placed in the same directory as your my-extension.php file
    require_once 'Webeo_XMLRPC.php';

    add_filter('wp_xmlrpc_server_class', array('Webeo_XMLRPC', 'webeo_getName'));
}

Theme
If your extension is only theme related, you could include the Webeo_XMLRPC class inside your functions.php file. The filter for wp_xmlrpc_server_class should be attached to the after_setup_theme action hook.

For example:

// wp-content/themes/my-theme/functions.php

add_action('after_setup_theme', 'webeo_theme_setup');
function webeo_theme_setup() {
    // The file should be placed in the same directory as your functions.php file
    require_once 'Webeo_XMLRPC.php';

    add_filter('wp_xmlrpc_server_class', array('Webeo_XMLRPC', 'webeo_getName'));
}

Sidenote: Instead of a function you could also put the plugin/theme setup functions inside a class and pass it as an array to add_action().

And yes, this way is update-proven. The only thing which can change are the names of the XMLRPC-WordPress filter, the parent class or the methods. But your code will not be touched by WordPress in any way. In addition, you should also add a prefix to your XMLRPC methods as I do with webeo_. This way you don't overwrite the methods of the parent class.

Cheers
Roman

Danke für dein Feedback. Freut mich das es dich zum Ziel geführt hat.

Gruss
Roman

I have seen this code snippet (the one where: class Webeo_XMLRPC extends wp_xmlrpc_server) on a couple of pages and I am trying to get it to work.

1. Where should I put the php file containig the wp_xmlrpc_server extend?
2. Where should I put the php file containing the add filter?
3. Will this prevent new WP updates to overwrite my extensions or do I need to change something when WP is updated?

Thanks in advance,

BR,
Fredrik

Freut mich zu hören, das der Artikel hilfreich war. Interessanter Anwendungsbereich .

Gruss
Roman

Gruss
Leon

Danke für dein Feedback.
In der Tat. Der Artikel könnte generell mal eine Auffrischung gebrauchen. Ich werd mich mal in einer ruhigen Minuten dran setzen.

Gruss Roman

der Satz "Dies da der Filter anschliessend über new $filter eine neue Instanz der XML-RPC-Server Klasse erstellt." klingt irgendwie komisch..

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