如下两个数组 ，求一个最佳的合并方法

$arr_1 = [
    ['id'=>1,'cc'=>'dd','ee'=>'hh'],
    ['id'=>2,'cc'=>'gg','ee'=>'qq'],
    ['id'=>3,'cc'=>'yy','ee'=>'！！'],
];
$arr_2 = [
    ['id'=>2,'hh'=>'##','ll'=>'^^'],
    ['id'=>1,'hh'=>'@@','ll'=>'%%'],
    ['id'=>4,'hh'=>'$$','ll'=>'&&'],
];
$arr = [];
foreach ($arr_1 as $key => &$value) {
    foreach ($arr_2 as $k => $item) {
        if ($value['id'] === $item['id']) {
            $temp = array_merge($value,$item);
            $arr[] = $temp;
        }
    }
}

$temp_ids = array_column($arr, 'id');

$sub_1 = array_filter($arr_1,function($o) use ($temp_ids){
    if (!in_array($o['id'], $temp_ids)) {
        return true;
    }
});


$sub_2 = array_filter($arr_2,function($i) use ($temp_ids){
    if (!in_array($i['id'], $temp_ids)) {
        return true;
    }
});

$res = array_merge($arr,$sub_1,$sub_2);
echo json_encode($res);
exit;

结果

[{"id":1,"cc":"dd","ee":"hh","hh":"@@","ll":"%%"},{"id":2,"cc":"gg","ee":"qq","hh":"##","ll":"^^"},{"id":3,"cc":"yy","ee":"\uff01\uff01"},{"id":4,"hh":"$$","ll":"&&"}]