Question

我在so和google中进行搜索，但是找不到解决我问题的任何方法。有类似问题的答案。而且，如果我在json中有一百多个对象，那么foreach可能会很慢。

感谢您的咨询

$list = json_decode($string);
$grouped = array();


foreach($list as $object) {

    if(!array_key_exists($object->id, $grouped)) {
         $newObject = new stdClass();        
         $newObject->id = $object->id;
         $newObject->tip = $object->tip;
         $newObject->kar = array();         
         $grouped[$object->id] = $newObject;
    }

    $taskObject = new stdClass();
    $taskObject->tur = $object->kar->tur;
    $taskObject->tid = $object->kar->tid;
    $taskObject->pric = $object->kar->pric;
    $grouped[$object->id]->kar[] = $taskObject;

}

$grouped = array_values($grouped);
$json = json_encode($grouped);

var_dump($json);

我的json ..

{
    "roms": [{
            "tip": "bane",
            "id": "327034409",
            "kar": [{
                "tur": "ray",
                "tid": "989530150",
                "pric": "3.25"
            }]
        },
        {
            "tip": "bane",
            "id": "327034409",
            "kar": [{
                "tur": "kay",
                "tid": "989530151",
                "pric": "1.67"
            }]
        },
        {
            "tip": "bane",
            "id": "327034409",
            "kar": [{
                "tur": "tay",
                "tid": "989530152",
                "pric": "5"
            }]
        },
        {
            "tip": "yane",
            "id": "327034410",
            "kar": [{
                "tur": "kay",
                "tid": "989530153",
                "pric": "14"
            }]
        },
        {
            "tip": "yane",
            "id": 327034410,
            "kar": [{
                "tur": "tay",
                "tid": "989530154",
                "pric": "3.75"
            }]
        },
        {
            "tip": "yane",
            "id": 327034410,
            "kar": [{
                "tur": "lay",
                "tid": "989530155",
                "pric": "1.3"
            }]
        },
        {
            "tip": "rula",
            "id": "327162383",
            "kar": [{
                "tur": "ray",
                "tid": "989855757",
                "pric": "3"
            }]
        },
        {
            "tip": "rula",
            "id": "327162383",
            "kar": [{
                "tur": "rok",
                "tid": "989855758",
                "pric": "1.83"
            }]
        },
        {
            "tip": "rula",
            "id": 327162383,
            "kar": [{
                "tur": "lok",
                "tid": 989855759,
                "pric": "4.4"
            }]
        }
    ]
}

我想以相同的tur / id将表单对象分组。并且我想对具有相同id，tur / tidname的json对象进行分组。像这样我要..

 {
    "roms": [{
            "tip": "bane",
            "id": "327034409",
            "kar": [{
                "tur": "ray",
                "tid": "989530150",
                "pric": "3.25"
            }, {
                "tur": "kay",
                "tid": "989530151",
                "pric": "1.67"
            }, {
                "tur": "tay",
                "tid": "989530152",
                "pric": "5"
            }]
        },

        {
            "tip": "yane",
            "id": "327034410",
            "kar": [{
                "tur": "kay",
                "tid": "989530153",
                "pric": "14"
            }, {
                "tur": "tay",
                "tid": "989530154",
                "pric": "3.75"
            }, {
                "tur": "lay",
                "tid": "989530155",
                "pric": "1.3"
            }]
        },

        {
            "tip": "rula",
            "id": "327162383",
            "kar": [{
                "tur": "ray",
                "tid": "989855757",
                "pric": "3"
            }, {
                "tur": "rok",
                "tid": "989855758",
                "pric": "1.83"
            }, {
                "tur": "lok",
                "tid": "989855759",
                "pric": "4.4"
            }]
        }

    ]
}

Answer 1

我认为这是正确的解决方案。

我更改了一些部分，例如遍历rom（$ list-> roms）而不是遍历列表。 tur，tid和pric并不是直系子代，但它们是数组的第一个元素。

$list = json_decode($string);
$grouped = array();

foreach ($list->roms as $object) {
    if (!array_key_exists($object->id, $grouped)) {
        $newObject = new stdClass();
        $newObject->id = $object->id;
        $newObject->tip = $object->tip;
        $newObject->kar = array();
        $grouped[$object->id] = $newObject;
    }

    $taskObject = new stdClass();
    $taskObject->tur = $object->kar[0]->tur;
    $taskObject->tid = $object->kar[0]->tid;
    $taskObject->pric = $object->kar[0]->pric;
    $grouped[$object->id]->kar[] = $taskObject;
}

$grouped = ['roms' => array_values($grouped)];
$json = json_encode($grouped);

var_dump($json);

PHP如何分组JSON对象ID

1 个答案: