3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public $teste; } $a = new A(); echo $a && isset($a->x) && $a->x;
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7

preferences:
43.81 ms | 402 KiB | 62 Q