3v4l.org

run code in 500+ PHP versions simultaneously
<?php $userId = null; is_null($userId) && $userId = 5; var_dump($userId); $carId = null; if (is_null($carId)) { $carId = 5; } var_dump($carId);
Output for 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
int(5) int(5)
preferences:
116.96 ms | 1456 KiB | 4 Q