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; <?php $arrays = array( 0 => array( 0 => 'one', 1 => 'two', 2 => 'three' ), 1 => array( 0 => 'four', 1 => 'five', 2 => 'six' ), 2 => array( 0 => 'seven', 1 => 'eight', 2 => 'nine' ) ); print_r(array_reduce($arrays, function($carry, $item) { print_r($item); return $carry; }), []);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
; Array ( [0] => one [1] => two [2] => three ) Array ( [0] => four [1] => five [2] => six ) Array ( [0] => seven [1] => eight [2] => nine ) Fatal error: Uncaught TypeError: print_r(): Argument #2 ($return) must be of type bool, array given in /in/aNIIM:9 Stack trace: #0 /in/aNIIM(9): print_r(NULL, Array) #1 {main} thrown in /in/aNIIM on line 9
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
; Array ( [0] => one [1] => two [2] => three ) Array ( [0] => four [1] => five [2] => six ) Array ( [0] => seven [1] => eight [2] => nine ) Warning: print_r() expects parameter 2 to be bool, array given in /in/aNIIM on line 9
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
; Array ( [0] => one [1] => two [2] => three ) Array ( [0] => four [1] => five [2] => six ) Array ( [0] => seven [1] => eight [2] => nine ) Warning: print_r() expects parameter 2 to be boolean, array given in /in/aNIIM on line 9
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/aNIIM on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/aNIIM on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/aNIIM on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/aNIIM on line 9
Process exited with code 255.

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