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<?php $array = ['x', 'y', 'z']; foreach($array as &$element) { if ($element=='x') { $element = 'a'; } } var_dump($array);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(1) "a" [1]=> string(1) "y" [2]=> &string(1) "z" }

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