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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 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array callback must have exactly two members in /in/oZ6Yh:9 Stack trace: #0 /in/oZ6Yh(9): array_map(Array, 'arrayTest') #1 {main} thrown in /in/oZ6Yh on line 9
Process exited with code 255.
Output for 8.1.0 - 8.1.28
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array 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.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback, array 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.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_map() expects parameter 1 to be a valid callback, array must have exactly two members in /in/oZ6Yh on line 9 Array ( [0] => a [1] => b [2] => c [3] => d )
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: array_map(): The first argument, 'Array', should be either NULL or a valid callback in /in/oZ6Yh on line 9 Array ( [0] => a [1] => b [2] => c [3] => d )
Output for 4.3.0 - 4.3.1
Warning: array_map() [http://www.php.net/function.array-map]: The first argument, 'Array', should be either NULL or a valid callback in /in/oZ6Yh on line 9 Array ( [0] => a [1] => b [2] => c [3] => d )
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