3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "b"; echo ++$a  . "\n"; $a = "abc"; echo ++$a  . "\n"; $a = "a4"; echo ++$a . "\n"; $a = "a4b1"; echo ++$a  . "\n";
based on 8F4Al
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: a  in /in/ug20T on line 4 1 2 a5 3
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a  in /in/ug20T on line 4 1 2 a5 3