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<?php class Foo { private $var; public function buggy() { $bar = new Bar; $bar->prop = & $this->var; $bar->modify(); var_dump($this->var); } } class Bar { public $prop; public function modify() { $this->prop .= 'xxx'; } } $o = new Foo; $o->buggy();
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "xxx"

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