3v4l.org

run code in 500+ PHP versions simultaneously
<?php $falseArr = [ '', '0', 0, false, [], null ]; $trueArr = [ ' ', 'false', '123', 'abc', 1, true, ['val'], new stdClass, function(){} ]; $print = function ($arr) { foreach ($arr as $v) { var_dump($v==false); } }; $print($falseArr); echo "\n"; $print($trueArr);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false)
preferences:
113.19 ms | 1543 KiB | 4 Q