3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo substr(date('Y'), -2); echo substr('5213037103', 2, 2); echo substr($registro, -6);
Output for 5.0.4 - 7.1.0
1413 Notice: Undefined variable: registro in /in/ZTNc3 on line 5
Output for 4.3.0 - 5.0.3
1413 Notice: Undefined variable: registro in /in/ZTNc3 on line 5