3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { const A = 'a!'; } class Bar { public $foo; public function __construct() { $this->foo = new Foo(); } } $bar = new Bar(); echo $bar->foo::A;
Output for 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 - 8.3.26, 8.4.1 - 8.4.13
a!

preferences:
97.09 ms | 407 KiB | 5 Q