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<?php class a { protected $a = 10; protected $c;} class b { protected $b; public function setA($a){$this->b = $a;return $this;}} var_dump(unserialize(serialize((new b)->setA(new a), true)));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: serialize() expects exactly 1 argument, 2 given in /in/ON54R:7 Stack trace: #0 /in/ON54R(7): serialize(Object(b), true) #1 {main} thrown in /in/ON54R on line 7
Process exited with code 255.

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