3v4l.org

run code in 500+ PHP versions simultaneously
<?php class C { } $c = new C; var_export($c instanceof NonExistingClass);
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
false
preferences:
102.12 ms | 1468 KiB | 4 Q