3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = [1, 2]; $b = [3,4]; var_dump( array_merge($a, $b), $a, $b );
Output for 5.4.0 - 7.1.0
array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) } array(2) { [0]=> int(1) [1]=> int(2) } array(2) { [0]=> int(3) [1]=> int(4) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/HVHfn 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/HVHfn on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/HVHfn on line 3
Process exited with code 255.