我是Wordpress插件开发的新手，我想创建一个简单的插件，它将在Wordpress管理的常规设置中添加2个字段。从这个答案中，我得到了以下代码（工作正常）：Add multiple custom fields to the general settings page

复制时（&A）；将此代码粘贴到我的主题中functions.php 文件，它工作得很好。但我需要它只有在插件被激活后才能工作（所以它独立于主题）。因此，我将此代码移到插件的主文件中，并添加了注册激活和停用插件功能。

function my_general_section() {  
    add_settings_section(  
        \'my_settings_section\', // Section ID 
        \'My Options Title\', // Section Title
        \'my_section_options_callback\', // Callback
        \'general\' // What Page?  This makes the section show up on the General Settings Page
    );

    add_settings_field( // Option 1
        \'option_1\', // Option ID
        \'Option 1\', // Label
        \'my_textbox_callback\', // !important - This is where the args go!
        \'general\', // Page it will be displayed (General Settings)
        \'my_settings_section\', // Name of our section
        array( // The $args
            \'option_1\' // Should match Option ID
        )  
    ); 

    add_settings_field( // Option 2
        \'option_2\', // Option ID
        \'Option 2\', // Label
        \'my_textbox_callback\', // !important - This is where the args go!
        \'general\', // Page it will be displayed
        \'my_settings_section\', // Name of our section (General Settings)
        array( // The $args
            \'option_2\' // Should match Option ID
        )  
    ); 

    register_setting(\'general\',\'option_1\', \'esc_attr\');
    register_setting(\'general\',\'option_2\', \'esc_attr\');
}

function my_section_options_callback() { // Section Callback
    echo \'<p>A little message on editing info</p>\';  
}

function my_textbox_callback($args) {  // Textbox Callback
    $option = get_option($args[0]);
    echo \'<input type="text" id="\'. $args[0] .\'" name="\'. $args[0] .\'" value="\' . $option . \'" />\';
}

function orgnizerInfoSettings__activation(){
    add_action(\'admin_init\', \'my_general_section\'); 
}

function orgnizerInfoSettings__deactivation(){
    remove_action(\'admin_init\', \'my_general_section\');
}

register_activation_hook( __FILE__, \'orgnizerInfoSettings__activation\' );
register_deactivation_hook( __FILE__, \'orgnizerInfoSettings__deactivation\' );