3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a += null; $b = null; $b += array(); $c = null; $c += null;
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Unsupported operand types in /in/r6hk9:4 Stack trace: #0 {main} thrown in /in/r6hk9 on line 4
Process exited with code 255.
Output for 5.3.20 - 5.6.28
Fatal error: Unsupported operand types in /in/r6hk9 on line 4
Process exited with code 255.