Online PHP editor | refs for 15U7k

<?php $i = 0; $start = microtime(true); $object = new \stdClass; while ($i < 1000000) { is_null("foo"); is_null(null); is_null(12345); is_null($object); $i++; } $end = microtime(true); var_dump($end - $start); $i = 0; $start = microtime(true); $object = new \stdClass; while ($i < 1000000) { null === "foo"; null === null; null === 12345; null === $object; $i++; } $end = microtime(true); var_dump($end - $start);