PHP求二维数组的差集

$arr1 = array(
  array(‘appid‘=>‘1111‘,‘sku‘=>‘aaaa‘),
  array(‘appid‘=>‘222‘,‘sku‘=>‘bbbb‘),
  array(‘appid‘=>‘333‘,‘sku‘=>‘cccc‘),
  array(‘appid‘=>‘444‘,‘sku‘=>‘ddd‘)
);
$arr2 = array(
  array(‘appid‘=>‘1111‘,‘sku‘=>‘aaaa‘),
  array(‘appid‘=>‘222‘,‘sku‘=>‘bbbb‘),
  array(‘appid‘=>‘555‘,‘sku‘=>‘ee‘)
);
foreach($arr1 as $k=>$v) if(in_array($v, $arr2)) unset($arr1[$k]);
print_r($arr1);

$r = array_filter($arr1, function($v) use ($arr2) { return ! in_array($v, $arr2);});
print_r($r);

Array
(
    [2] => Array
        (
            [appid] => 333
            [sku] => cccc
        )
 
    [3] => Array
        (
            [appid] => 444
            [sku] => ddd
        )
 
)