Online PHP editor | output for CnoKD

<?php // https://ru.stackoverflow.com/questions/1444784 class MyExc1 extends \Exception {} class MyExc2 extends \Exception {} class ExcController { private static $map = [ 22 => MyExc1::class, 28 => MyExc2::class, ]; public static function getExceptionClassByCode($curlErr) { return self::$map[$curlErr]; } public static function throwExceptionByCode($curlErr, $msg) { throw new self::$map[$curlErr]($msg); } } // обратите внимание на круглые скобки /* 1 */ throw new (ExcController::getExceptionClassByCode(22)); // throw new (MyExc1); /* 2 */ throw new (ExcController::getExceptionClassByCode(22))('qwerty'); // throw new (MyExc1)('qwerty') /* 3 */ ExcController::throwExceptionByCode(22, 'qwerty'); // идентичный результат