3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $rob = ''; $rob[] = 'abc'; var_dump($rob);
Output for 7.1.0 - 7.2.0
Fatal error: Uncaught Error: [] operator not supported for strings in /in/d8LBE:5 Stack trace: #0 {main} thrown in /in/d8LBE on line 5
Process exited with code 255.
Output for 5.3.22 - 7.0.20
array(1) { [0]=> string(3) "abc" }