3v4l.org

run code in 200+ php & hhvm versions
<?php $array = [ "val", "val", [ "val", "val" ] ]; $result = call_user_func_array('array_merge', $array); var_dump($result);
Output for 7.3.0 - 7.4.0alpha1
Warning: array_merge(): Expected parameter 1 to be an array, string given in /in/tY8vD on line 12 NULL
Output for 5.4.0 - 5.6.40, 7.0.0 - 7.2.19
Warning: array_merge(): Argument #1 is not an array in /in/tY8vD on line 12 NULL
Output for hhvm-3.22.0
Warning: Invalid operand type was used: array_merge expects array(s) or collection(s) in /in/tY8vD on line -1 NULL
Output for hhvm-3.17.3 - 3.21.3
Warning: Invalid operand type was used: array_merge expects array(s) or collection(s) in /in/tY8vD on line 12 NULL
Output for hhvm-3.10.1 - 3.15.4
Warning: array_merge() expects parameter 1 to be array, string given in /in/tY8vD on line 12 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/tY8vD 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/tY8vD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tY8vD on line 3
Process exited with code 255.