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run code in 200+ php & hhvm versions
Bugs & Features
<?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);
based on nCMK3
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0alpha1
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" } } }