3v4l.org

run code in 500+ PHP versions simultaneously
<?php $h1='$6$rounds=1$abcdefghijklmnop'; $h2='$6$abcdefghijklmnop'; $p='password'; $c1=crypt($p,$h1); $c2=crypt($p,$h2); var_dump($c1, $c2);

preferences:
30.54 ms | 493 KiB | 6 Q