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<?php // Everything you enter here will be executed by our servers. Try it! class A { public $b; public function A(B $b = null){ if(is_null($b)) $b = new B(); $this->b = $b; } } class B { public $a; public function B(A $a = null) { if(is_null($a)) $a = new A(); $this->a = $a; } } var_dump(new A(new B(new A())));
Output for git.master, git.master_jit, rfc.property-hooks
object(A)#1 (1) { ["b"]=> NULL }

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