如何根据php中的键过滤和设置优先级数组

Question

Array
(
    [0] => stdClass Object
        (
            [category_id] => 5
            [distributor_id] => 999999
            [name] => Attractions
            [parent_category_id] => 0
            [is_global_category] => 0
            [category_logo] => qrcodes/categoryupload/img_1438954822_attractions.png
            [is_active] => 1
            [ticket_ids] => 
            [position] => 0
        )

    [1] => stdClass Object
        (
            [category_id] => 5
            [distributor_id] => 8885
            [name] => Attractions
            [parent_category_id] => 0
            [is_global_category] => 0
            [category_logo] => qrcodes/categoryupload/img_1438954822_attractions.png
            [is_active] => 1
            [ticket_ids] => 
            [position] => 0
        )

    [2] => stdClass Object
        (
            [category_id] => 6
            [distributor_id] => 999999
            [name] => Walk & Bike
            [parent_category_id] => 0
            [is_global_category] => 0
            [category_logo] => qrcodes/categoryupload/img_1438406863_walk-bike.png
            [is_active] => 1
            [ticket_ids] => ["13594"]
            [position] => 0
        )

)

我想从这个数组中创建一个新数组。这里有两种类型的分销商 id 可以是：

[distributor_id] => 999999 这是固定的

秒是

[distributor_id] => $cod_id(8885) 任何登录的人

现在我想创建新数组并希望优先考虑 [distributor_id] => $cod_id(8885) 并希望结果看起来像这样

Array
    (

        [0] => stdClass Object
            (
                [category_id] => 5
                [distributor_id] => 8885
                [name] => Attractions
                [parent_category_id] => 0
                [is_global_category] => 0
                [category_logo] => qrcodes/categoryupload/img_1438954822_attractions.png
                [is_active] => 1
                [ticket_ids] => 
                [position] => 0
            )

        [1] => stdClass Object
            (
                [category_id] => 6
                [distributor_id] => 999999
                [name] => Walk & Bike
                [parent_category_id] => 0
                [is_global_category] => 0
                [category_logo] => qrcodes/categoryupload/img_1438406863_walk-bike.png
                [is_active] => 1
                [ticket_ids] => ["13594"]
                [position] => 0
            )

    )

如何使用 foreach 和其他解决方案来处理它

Answer 1

你可以使用usort()函数。

function comparator($object1, $object2) { 
    return $object1->distributor_id > $object2->distributor_id; 
} 

usort($array, 'comparator');

阅读更多来自here。

Answer 2

我已经为您的问题编写了一个可能的解决方案，必要时会提到 cmets，看看它是否对您有帮助。

假设，

Array
(
    [0] => stdClass Object
        (
            [category_id] => 5
            [distributor_id] => 999999
            [name] => Attractions
            [parent_category_id] => 0
            [is_global_category] => 0
            [category_logo] => qrcodes/categoryupload/img_1438954822_attractions.png
            [is_active] => 1
            [ticket_ids] => 
            [position] => 0
        )

    [1] => stdClass Object
        (
            [category_id] => 5
            [distributor_id] => 8885
            [name] => Attractions
            [parent_category_id] => 0
            [is_global_category] => 0
            [category_logo] => qrcodes/categoryupload/img_1438954822_attractions.png
            [is_active] => 1
            [ticket_ids] => 
            [position] => 0
        )

    [2] => stdClass Object
        (
            [category_id] => 6
            [distributor_id] => 999999
            [name] => Walk & Bike
            [parent_category_id] => 0
            [is_global_category] => 0
            [category_logo] => qrcodes/categoryupload/img_1438406863_walk-bike.png
            [is_active] => 1
            [ticket_ids] => ["13594"]
            [position] => 0
        )

存储在一个名为$your_array的变量中，然后

$existArr = array(); // we'll be storing data in category_id => distributor_id pair
$newArr   = array(); // this will be the new array

foreach($your_array as $your_arr){ // traverse the data(old array)

    if(array_key_exists($your_arr->category_id, $existArr)){ // check if key already exists

        if($existArr[$your_arr->category_id] == 8885){ // if the key exists, check if the value of that key is 8885(priority)

            continue; // if yes, skip

        }else{ // if not, over-write(update the value) 

            $existArr[$your_arr->category_id] = $your_arr->distributor_id; // or simply 8885 -- update the {$existArr}

            foreach($newArr as $key => $val){ // search the key of previous saved value in {$newArr}

                if($your_arr->category_id == $val->category_id){ 

                    $newArr[$key] = $your_arr; // update the current value in {$newArr}
                    break;

                }
            }

        }

    }else{ // if the key doesn't exist

        $existArr[$your_arr->category_id] = $your_arr->distributor_id; // or simply 8885 -- insert key => value in the {$existArr}
        $newArr = $your_arr; // insert the current value in {$newArr}

    }

}
print_r($newArr);