Example #1
0
 /**
  * 单例:PDO对象
  *
  * @access public
  * @param 无
  * @return PDO
  */
 public function getPdo()
 {
     if (Database::isSetInstance()) {
         return Database::$singleton;
     }
     // 创建pdo对象
     Database::$singleton = Database::initializeInstance();
     return Database::$singleton;
 }