Online PHP editor | output for 0SRWb

<?php class P { protected static $v = 1; public function output() { echo "P: " . self::$v . "\n"; } } class C extends P { public function test(P $i) { return $i->v; } } class C2 extends P { protected static $v = 2; public function output() { echo "C2: " . self::$v . "\n"; parent::output(); } } $c = new C; $c2 = new C2; $c2->output();