3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump( [ 1 => 2, 2 => 3] + [ 1 => 1, 3 => 3] );
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(3) { [1]=> int(2) [2]=> int(3) [3]=> int(3) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/W9Dl9 on line 3
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/W9Dl9 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/W9Dl9 on line 3
Process exited with code 255.