3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = microtime(true); for($i = 0; $i < 100000; $i++) { $a = 100; $b = 200; $c = $a === $b; } echo sprintf("%f seconds", microtime(true) - $s);

preferences:
32.01 ms | 402 KiB | 5 Q