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<?php class A { public function foo(string $text = null) { var_dump($text); } } class B extends A { public function foo(?string $text = null) { var_dump($text); } } $a = new A(); $a->foo('Hello'); $b = new B(); $b->foo('Hello');
Output for git.master, git.master_jit
Deprecated: A::foo(): Implicitly marking parameter $text as nullable is deprecated, the explicit nullable type must be used instead in /in/0g8Ch on line 5 string(5) "Hello" string(5) "Hello"
Output for rfc.property-hooks
string(5) "Hello" string(5) "Hello"

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