3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php for ($i=0; $i < 3; ++$i) var_dump($a++);
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: a in /in/oHIDs on line 3 NULL int(1) int(2)
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/oHIDs on line 3 NULL int(1) int(2)