<?php $array1 = array('a'=>'a','b'=>'b','c'=>'c','d' =>'d','e' =>'e'); $array2 = array('a','c','e'); $array = array_filter($array1, function($key) use ($array2) { return in_array($key, $array2); }, ARRAY_FILTER_USE_KEY); var_dump($array);
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