3v4l.org

run code in 500+ PHP versions simultaneously
<?php interface A { public function foo(string $q, ?array $params, bool $reference): bool; } class B implements A { public function foo(string $q, ?array $params = null, bool $reference = false): bool { return true; } } $class = new B(); var_dump($class->foo('bar'));
Output for 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
bool(true)

preferences:
66.71 ms | 985 KiB | 4 Q