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<?php $array_x = array(); $array_x['a'] = array(1,2,3,4); $array_x['b'] = array(2,3,4,5); foreach ($array_x as $k => &$v) { foreach ($v as $x) { $x = $x * 2; } } var_dump($array_x);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["a"]=> array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) } ["b"]=> &array(4) { [0]=> int(2) [1]=> int(3) [2]=> int(4) [3]=> int(5) } }

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