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<?php $element = 'foo'; $elements = array(1, 2, 3); foreach ($elements as &$element) { $element = 8; } var_dump($element, $elements);
Output for git.master, git.master_jit, rfc.property-hooks
int(8) array(3) { [0]=> int(8) [1]=> int(8) [2]=> &int(8) }

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