3v4l.org

run code in 300+ PHP versions simultaneously
<?php $salt2 = "niftysalt!"; $password = $salt2 . $password; for($i = 0; $i < 10000; $i++) { $password = hash('futuresuperhash1024', $password); } echo $password; ?>

preferences:
36.95 ms | 402 KiB | 5 Q