3v4l.org

run code in 500+ PHP versions simultaneously
<?php abstract class A { abstract protected function foo(); } abstract class B extends A { abstract protected function foo(array $context = []); }
Output for 7.1.25 - 7.1.27
Fatal error: Can't inherit abstract function A::foo() (previously declared abstract in B) in /in/ktgkR on line 11
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 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 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
preferences:
32.74 ms | 1155 KiB | 9 Q