3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print_r(['lala'=>'XXX'] + ['booboo'=>'YYY']);
based on M1rAd
Output for 5.4.0 - 5.6.30, hhvm-3.10.1, hhvm-3.12.14 - 3.17.3, 7.0.0 - 7.3.0alpha1
Array ( [lala] => XXX [booboo] => YYY )
Output for hhvm-3.11.1

Process exited with code 137.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/GLKio on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/GLKio on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/GLKio on line 2
Process exited with code 255.