3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time = (string) time(); $time = strrev($time); $time = substr($time, 0, 6); echo base64_encode($time);
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.5, 7.1.7, 7.1.20, 7.2.0 - 7.2.6
NDY5MDA3
Output for 7.1.10
MzY5MDA3
Output for 7.1.6
NTY5MDA3
preferences:
171.76 ms | 401 KiB | 219 Q