3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait T { function foo(int $a): int { return $a; } } class A { use T; function foo(): string { } } $a = new A();
Output for 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14

preferences:
157.82 ms | 407 KiB | 5 Q