你只需要register_setting() 并将自动保存。看到了吗Settings API 了解更多信息。下面是一个完整的示例：

function spw_cb() {
    if( !($value = get_option(\'sprockets_per_widget\')) ) {
        $value = 7;
    }

    ?>
    <input type="text" size="3" name="sprockets_per_widget" value="<?php echo $value; ?>" /> Numeric only!
    <?php
}

function spw_init() {
    add_settings_field(\'sprockets_per_widget\', \'Sprockets per Widget\', \'spw_cb\', \'general\');
    register_setting(\'general\', \'sprockets_per_widget\', \'intval\');
}
add_action(\'admin_init\', \'spw_init\');