示例#1
0
 public static function instance()
 {
     if (self::$_instance !== null) {
         return self::$_instance;
     }
     self::$_instance = new GPDO();
     return self::$_instance;
 }
 public function __construct()
 {
     $this->_db = GPDO::instance();
     parent::__construct();
     if (method_exists($this, 'formOptions')) {
         $this->formOptions = $this->formOptions();
     }
 }