Online PHP editor | output for aLDJV

<?php $array1 = [ 'a1' => ['a_name' => 'aaaaa', 'a_value' => 'aaa'], 'b1' => ['b_name' => 'bbbbb', 'b_value' => 'bbb'], 'c1' => ['c_name' => 'ccccc', 'c_value' => 'ccc'], ]; $array2 = ['b1' => ['b_name' => 'bbbbb'], 'c1' => ['a_value' => 'aaa']]; $result = array_intersect_key($array1, $array2); foreach ($result as $key => &$value) { $value = array_intersect_key($value, $array2[$key]); if (!$value) { unset($result[$key]); } } var_export($result);