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@ 2015-12-08T06:00:51Z

<?php

error_reporting(-1);

class A {
    public function q(A $a = null) {}
}

class B {
    public function q(B $b, A $a) {}
}

$b = new B();

Output
Performance
VLD
References
Branches

error_reporting: documentation ( source)

preferences:dark modelive preview

52.32 ms | 402 KiB | 5 Q