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<?php class foo { public $bar = null; public function &getBar() { if ($this->bar === null) { $this->bar[] = 'init'; } return $this->bar; } } $obj = new foo; $myValue = &$obj->getBar(); $myValue[] = 123; var_dump($obj->bar);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(4) "init" [1]=> int(123) }

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