使用《法典》中的示例Settings API 部分Put it 在主题的functions.php:

add_action(\'admin_init\', \'eg_settings_api_init\');

function eg_settings_api_init() {
    add_settings_section(
        \'eg_setting_section\',
        \'Example settings section in reading\',
        \'eg_setting_section_callback_function\',
        \'reading\'
    );

    add_settings_field(
        \'eg_setting_name\',
        \'Example setting Name\',
        \'eg_setting_callback_function\',
        \'reading\',
        \'eg_setting_section\'
    );

    register_setting(\'reading\',\'eg_setting_name\');
}

function eg_setting_section_callback_function() {
    echo \'<p>Intro text for our settings section</p>\';
}

function eg_setting_callback_function() {
    echo \'<input name="eg_setting_name" 
        id="gv_thumbnails_insert_into_excerpt" 
        type="checkbox" 
        value="1" 
        class="code" \' 
        . checked( 1, get_option(\'eg_setting_name\'), false ) 
        . \' />Explanation text\';
}

在主题中header.php 文件，它可用于呈现一个红色的大警告横幅：

<?php 
    if( get_option(\'eg_setting_name\') ) {
        echo \'<h1 style="background-color: #fcc;width:100%;height:3em;line-height:3em;text-align:center;top:40px;position:fixed">
            Warning!
            </h1>\';
    }
?>