3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = null; $var = new stdClass(); $time = microtime(true); for ($i = 0; $i <= 1000000; $i++) { if (!$var) {} } $time = microtime(true) - $time; echo "Time using '!': $time\n"; $time = microtime(true); for ($i = 0; $i <= 1000000; $i++) { if ($var === null) {} } $time = microtime(true) - $time; echo "Time using '===': $time\n";

preferences:
53.7 ms | 402 KiB | 5 Q