在WordPress中将类方法作为回调函数传递

本文介绍了在WordPress中将类方法作为回调函数传递的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在寻找一种方法来传递一个类方法到回调函数参数。

I'm looking for a way to pass a class method to a call-back function parameter.

我通常使用 create_function 如下，但我听说它很慢，使调试困难。

I usually use create_function() as follows but I've heard it is slow and makes it difficult to debug.

add_action('init', create_function('', '$o = new AdminPageClass;')); class AdminPageClass { function __construct() { add_action('admin_menu', array(&$this, 'admin_menu')); } function admin_menu() { add_options_page( 'Sample Admin Page Class', 'Sample Admin Page Class', 'manage_options', 'sample_admin-page_class', array(&$this, 'admin_page')); } function admin_page() { ?> <div class="wrap"> <h1>Hi there</h1> <p>Hello World!</p> </div> <?php } }

它可以做一个额外的功能，像这样;然而，如果可能的话，我想做它没有它。

Of course, it can be done with an extra function like this; however, I'd like to do it without it if possible.

add_action('init', 'load_admin_page_class'); function load_admin_page_class() { $o = new AdminPageClass; }

此外，在它之前实例化类对象使它成为可能，

Also, instantiating the class object prior to it makes it possible but it creates an extra line as well.

$o = new AdminPageClass; add_action('admin_menu', array(&$o, 'admin_menu')); class AdminPageClass { function admin_menu() { add_options_page( 'Sample Admin Page Class', 'Sample Admin Page Class', 'manage_options', 'sample_admin-page_class', array(&$this, 'admin_page')); } function admin_page() { ?> <div class="wrap"> <h1>Hi there</h1> <p>Hello World!</p> </div> <?php } }

类在单独的文件中，所以我更喜欢第一个方法，减少主插件文件中的行。但是如上所述，应该避免使用 create_function（）。

I always define classes in separate files so I prefer the first method which reduces lines in the main plugin file. But as mentioned, use of create_function() should be avoided.

感谢您的信息。

推荐答案

无需创建一个静态方法。

I found that there was no need to create a static method at all.

add_action('admin_menu', array(new AdminPageClass, "admin_menu")); class AdminPageClass { function admin_menu() { add_options_page( 'Sample Admin Page Class', 'Sample Admin Page Class', 'manage_options', 'sample_admin_page_class', array(&$this, 'admin_page')); } function admin_page() { ?> <div class="wrap"> <h1>Hi there</h1> <p>Hello World!</p> </div> <?php } }