3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr1 = ["foo"]; $arr2 = ["bar"]; $arr3 = ["foo"]; var_dump($arr1 + $arr2 + $arr3);
Output for 5.4.0 - 7.2.0
array(1) { [0]=> string(3) "foo" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/X5om3 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 '[' in /in/X5om3 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/X5om3 on line 3
Process exited with code 255.