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<?php class Test { public $a = 1; public function &getA() {$a = [ &$this->a ]; return $a; } } class Test2 { public $as = []; public function &getAs() { $data = []; foreach ($this->as as $a) { $data[] = &$a->getA(); } return $data; } } $a = new Test(); $b = &$a->getA(); $t = new Test2(); $t->as[] = $a; $c = $t->getAs(); $a->a = 2; var_dump($b); var_dump($c);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> &int(2) } array(1) { [0]=> array(1) { [0]=> &int(2) } }

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