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<?php class Foo { protected $foo; public function __construct(Foo $foo = null) { if($foo == null) { $foo = new Foo($this); } $this->foo = $foo; } } $a = new Foo(); print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
Foo Object ( [foo:protected] => Foo Object ( [foo:protected] => Foo Object *RECURSION* ) )

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