3v4l.org

run code in 500+ PHP versions simultaneously
<?php class P { protected $v = 1; } class C extends P { public function test(P $i) { echo $i->v; } } class C2 extends P { public function __construct() { $this->v = 2; } } $c = new C; $c2 = new C2; $c->test($c2);
Output for 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
2

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53.79 ms | 888 KiB | 4 Q