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<?php $myArray = [ true, ['abc', 'def', false], false, 1, 'ghi', 2, [['HELLO', 'WORLD', true], [123, 456, false, 'false'], ], ]; array_walk_recursive( $myArray, function ($key,&$value) { if (is_bool($value)) { $value = 'I AM A BOOLEAN'; } } ); var_dump($myArray);
Output for git.master_jit, git.master, rfc.property-hooks
Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 Warning: {closure}(): Argument #2 ($value) must be passed by reference, value given in /in/f7c40 on line 15 array(7) { [0]=> bool(true) [1]=> array(3) { [0]=> string(3) "abc" [1]=> string(3) "def" [2]=> bool(false) } [2]=> bool(false) [3]=> int(1) [4]=> string(3) "ghi" [5]=> int(2) [6]=> array(2) { [0]=> array(3) { [0]=> string(5) "HELLO" [1]=> string(5) "WORLD" [2]=> bool(true) } [1]=> array(4) { [0]=> int(123) [1]=> int(456) [2]=> bool(false) [3]=> string(5) "false" } } }

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