예제 #1
0
	/**
	 * Singleton 
	 *
	 * @access public static
	 * @return SLS_Sql $instance SLS_Sql instance
	 * @since 1.0
	 */
	public static function getInstance() 
	{
		if (is_null(self::$_instance)) 		
			self::$_instance = new SLS_Sql();		
		return self::$_instance;
	}