3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo; interface Bar { } class SomeClass implements Bar { } if (isset(class_implements(SomeClass::class)[Bar::class])) { echo 'Yupee!'; } else { echo 'Ugh :('; }
Output for 7.1.0 - 7.1.33, 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
Yupee!
preferences:
102.15 ms | 1509 KiB | 4 Q