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run code in 150+ php & hhvm versions
Bugs & Features
<?php $input_array = [['a', 'b', 'c'], ['d', 'e', 'f']]; $input_array = array_map($input_array, 'join', ','); var_dump($input_array);
based on uhJ8M
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: array_map() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /in/fX44o on line 3 NULL
Output for hhvm-3.10.0 - 3.12.0
Warning: Invalid argument: function: not a valid callback array Warning: array_map(): Argument #2 should be an array or collection NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/fX44o 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/fX44o on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/fX44o on line 2
Process exited with code 255.