3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { private int $num; public function __construct(int $num) { $this->num = $num; } } var_dump(new Foo(1) == new Foo(2));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
bool(false)

preferences:
62.92 ms | 406 KiB | 5 Q