public static function instance($options = array())
 {
     if (is_null(self::$instance) && CS_ACTIVE_CUSTOMIZE) {
         self::$instance = new self($options);
     }
     return self::$instance;
 }
<?php

if (!defined('ABSPATH')) {
    die;
}
// Cannot access pages directly.
// ===============================================================================================
// -----------------------------------------------------------------------------------------------
// CUSTOMIZE SETTINGS
// -----------------------------------------------------------------------------------------------
// ===============================================================================================
$options = array();
// -----------------------------------------
// Customize Core Fields                   -
// -----------------------------------------
$options[] = array('name' => 'lazycat', 'title' => 'Lazycat密钥验证', 'settings' => array(array('name' => 'lazycat_key', 'control' => array('label' => '密钥', 'type' => 'text'))));
CSFramework_Customize::instance($options);