3v4l.org

run code in 300+ PHP versions simultaneously
<?php $enc = "HyS7Nj+c3b3+1kaT6gLpK9kDQS3lIDtYUNQHtz/bLAw="; echo preg_replace('/[^a-zA-z]/', '', $enc);
preferences:
29.84 ms | 404 KiB | 5 Q