3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'foo'; $bar = 'barbarbarbarbarbarbarbarbarbarba'; $p = 'password'; $s = 'abcdefghijklmnopqrstuvwxyz012345'; print crypt($p, '$2a$07$'.$s.'$');

preferences:
41.76 ms | 402 KiB | 5 Q