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<?php $params = [1,2,3]; function transform(array $params) { $references = []; foreach ($params as $key => $value) { $references[$key] = &$params[$key]; } unset($value); $value = "foo"; return $references; return $references; } var_dump($params); $params = transform($params); var_dump($params); $hovno = 'prdel'; $prdel = &$hovno; var_dum($hovno); var_dump($prdel);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Fatal error: Uncaught Error: Call to undefined function var_dum() in /in/Lr9fS:25 Stack trace: #0 {main} thrown in /in/Lr9fS on line 25
Process exited with code 255.

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