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<?php $a = 'foo'; $b = 'bar'; $array = [&$a, $b]; var_dump($array); $newArray = array_map(function(&$item){ return $item; }, $array); var_dump($newArray);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> &string(3) "foo" [1]=> string(3) "bar" } Warning: {closure}(): Argument #1 ($item) must be passed by reference, value given in /in/RcFGe on line 9 array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" }

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