3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $input_array = [['a', 'b', 'c'], ['d', 'e', 'f']]; array_walk($input_array, 'join', ','); var_dump($input_array);
based on G7SvE
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Warning: join() expects at most 2 parameters, 3 given in /in/uhJ8M on line 3 Warning: join() expects at most 2 parameters, 3 given in /in/uhJ8M on line 3 array(2) { [0]=> array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } [1]=> array(3) { [0]=> string(1) "d" [1]=> string(1) "e" [2]=> string(1) "f" } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/uhJ8M on line 2
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/uhJ8M on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/uhJ8M on line 2
Process exited with code 255.