3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait a { public static function foo() { return 'foo'; } } class b { function __construct() { echo a::foo(); } } new b;
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Calling static trait method a::foo is deprecated, it should only be called on a class using the trait in /in/ImUaL on line 9 foo
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
foo
preferences:
245.92 ms | 403 KiB | 330 Q