3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface I { public function example(); } class A implements I { public function example(): int { } // compatible with I::example } class B extends A { public function example(): string { } // compatible with I::example }

This is an error 500

Value for `_results` contains invalid data `array`


preferences:
165.49 ms | 2582 KiB | 8 Q