我现在正在测试以下插件。

/*
Plugin Name: Menu Test
Plugin URI: http://codex.wordpress.org/Adding_Administration_Menus
Description: Menu Test
Author: Codex authors
Author URI: http://example.com
*/


include(\'./customFields.php\');

// Hook for adding admin menus
add_action(\'admin_menu\', array(\'customFields\', \'buildOptions\'));

// action function for above hook

以及customFields中的类。php

class customFields {

    private function createMenu () {
        add_media_page(\'Custom Media Options\', \'Add Fields to Media\',     \'manage_options\', \'custom_media_options\', $this::createMenuOptionsPage());

    }

    private function createMenuOptionsPage () {
        echo \'test\';

    }

    public function buildOptions () {
        $this::createMenu();
    }

}  

我看不出我的语法有任何错误，但媒体下的子菜单从未出现。谁能帮帮我吗？

class customFields {

    private function createMenu () {
        add_media_page(\'Custom Media Options\', \'Add Fields to Media\',     \'manage_options\', \'custom_media_options\', $this->createMenuOptionsPage());

    }

    private function createMenuOptionsPage () {
        echo \'test\';

    }

    public function buildOptions () {
        $this->createMenu();
    }

}  

$customFields = new customFields();
add_action(\'admin_menu\', array($customFields, \'buildOptions\'));