3v4l.org

run code in 300+ PHP versions simultaneously
<?php function MLencrypt($pass){ $hash = ''; for($i=0;$i<strlen($pass);$i++) $hash .= substr(md5($pass[$i]),($i%15),30); echo($hash); return md5($hash); } echo(MLencrypt('aaaa')); ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
0cc175b9c0f1b6a831c399e2697726cc175b9c0f1b6a831c399e26977266c175b9c0f1b6a831c399e269772661175b9c0f1b6a831c399e2697726612b4a47a006fd53856f719020ab84e1c3

preferences:
290.35 ms | 406 KiB | 456 Q