/** * Pinyin * @return Pinyin */ static function getInstance() { if (null == self::$_instance) { self::$_instance = new self(); } return self::$_instance; }
/** * get class instance * * @return \Overtrue\Pinyin\Pinyin */ public static function getInstance() { if (is_null(self::$_instance)) { self::$_instance = new static(); } return self::$_instance; }