PHP の array_uintersect_uassoc() 関数

array_uintersect_uassoc(arr1, arr2, arr3, … , compare_func1, compare_func2)

<?php
function compare_func_key($a, $b) {
   if ($a === $b) {
      return 0;
   }
   return ($a > $b)? 1:-1;
}
function compare_func_val($a, $b) {
   if ($a === $b) {
      return 0;
   }
   return ($a > $b)? 1:-1;
}
$arr1 = array("a" => "laptop", "b" => "keyboard", "c" => "mouse");
$arr2 = array("a" => "laptop", "b" => "keyboard", "c" => "headphone");
$res = array_uintersect_uassoc($arr1, $arr2, "compare_func_key", "compare_func_val");
print_r($res);
?>