3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo implements Stringable { public function __toString() { return "Foo"; } } function greet(string $s) { echo "Hello $s"; } greet(new Foo());
Output for 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
Hello Foo

preferences:
53.23 ms | 834 KiB | 4 Q