3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = ['a' => 1, 'b' => 2]; $arr += ['a' => 3] + ['b' => 4]; print_r($arr); $arr = ['a' => 1, 'b' => 2]; array_merge($arr, ['a' => 3], ['b' => 4]); print_r($arr);
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [a] => 1 [b] => 2 ) Array ( [a] => 1 [b] => 2 )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/NfgMM 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/NfgMM on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/NfgMM on line 3
Process exited with code 255.