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<?php function arrayTest($key) { return '1' + $key; } $arr = array('a', 'b', 'c', 'd'); $arrTwo = array_map($arr, 'arrayTest'); print_r($arr); print_r($arrTwo);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array callback must have exactly two members in /in/oZ6Yh:9 Stack trace: #0 /in/oZ6Yh(9): array_map(Array, 'arrayTest') #1 {main} thrown in /in/oZ6Yh on line 9
Process exited with code 255.

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