3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = false; var_dump($x !== "" && $x == null); $x = 0; var_dump($x !== "" && $x == null); $x = array(); var_dump($x !== "" && $x == null); $x = 0.0; var_dump($x !== "" && $x == null); $x = "0"; var_dump($x !== "" && $x == null); $x = new stdClass(); var_dump($x !== "" && $x == null);
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(true) bool(true) bool(true) bool(false) bool(false)
Output for 4.3.0 - 4.4.9
bool(true) bool(true) bool(true) bool(true) bool(false) bool(true)