3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Foo { public function bar(int $a): int { return $a * 2; } } $foo = new Foo(); echo $foo->bar("2");
Output for 8.1.19 - 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
4

preferences:
26.34 ms | 1136 KiB | 7 Q