3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rounds = 100000; $voll = "inhalt"; $leer = ""; //$unset $start = microtime(true); for ($i = 0; $i < $rounds; ++$i) { empty($voll); } echo "Took me ".(microtime(true) - $start). "seconds";

preferences:
29.4 ms | 402 KiB | 5 Q