3v4l.org

run code in 300+ PHP versions simultaneously
<?php $t = microtime(true); intdiv(10, 3); echo microtime(true) - $t; echo "\n"; $t = microtime(true); (int) 10 / 3; echo microtime(true) - $t;

preferences:
28.07 ms | 402 KiB | 5 Q