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<?php interface I { public function compare(self $object); } class A implements I { public function compare(A $aObject) { return true; } } class B implements I { public function compare(self $bObject) { return true; } } class C extends A { public function compare(self $bObject) { return true; } } $a = new A(); $b = new B(); $c = new C(); $a->compare($a); $a->compare($b); $a->compare($c);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of A::compare(A $aObject) must be compatible with I::compare(I $object) in /in/ioTWJ on line 7
Process exited with code 255.

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