3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait T { public function __construct() { parent::__construct(42); } } class A { public function __construct($v) { var_dump($v); } }
Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
147.14 ms | 403 KiB | 213 Q