3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array += array('a');
based on 4KG6Z
Output for 7.0.0 - 7.1.0
Notice: Undefined variable: array in /in/mqi1p on line 2 Fatal error: Uncaught Error: Unsupported operand types in /in/mqi1p:2 Stack trace: #0 {main} thrown in /in/mqi1p on line 2
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Invalid operand type was used: cannot perform this operation with arrays in /in/mqi1p on line 2
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.6.28
Notice: Undefined variable: array in /in/mqi1p on line 2 Fatal error: Unsupported operand types in /in/mqi1p on line 2
Process exited with code 255.