Question

我编写了从数据库中选择数据的代码，通过2个参数（match_day和competition_id）对数组进行分组并生成JSON

foreach ($result as $res) {
    $day = date('d', $res["match_start_time"]);
    $json["response"][] = array(
        "competition_id" => $res["competition_id"],
        "match_start_time" => $res["match_start_time"],
        "match_day" => $day
    );
}
$arr = array();
$arr["items"] = array();
foreach($json["response"] as $key => $item)
{
    if(!isset($arr['items'][$item['match_day']][$item['competition_id']])){
        $arr['items'][$item['match_day']][$item['competition_id']] = array();
        $arr['items'][$item['match_day']][$item['competition_id']]['league'] = $item['competition_id'];
        $arr['items'][$item['match_day']][$item['competition_id']]['day'] = $item['match_day'];

    }

    $arr['items'][$item['match_day']][$item['competition_id']]['matches'][] = $item;
}

$arr['items'] = array_values($arr['items']);
echo json_encode($arr);

此代码为我提供了以下JSON

{
    "items": [
        {
            "cuefa": {
                "league": "cuefa",
                "day": "01",
                "matches": [
                    {
                        "competition_id": "cuefa",
                        "match_start_time": "1285873500"
                    }
                ]
            }
        },
        {
            "cuefa": {
                "league": "cuefa",
                "day": "30",
                "matches": [
                    {
                        "competition_id": "cuefa",
                        "match_start_time": "1285866000"
                    }
                ]
            }
        }
    ]
}

我无法删除items数组中的competition_id。如何更改代码以获取以下JSON？

{
    "items": [
        {
            "block": [
                {
                    "league": "cuefa",
                    "day": "01",
                    "matches": [
                        {
                            "competition_id": "cuefa",
                            "match_start_time": "1285873500"
                        }
                    ]
                }
            ]
        },
        {
            "block": [
                {
                    "league": "cuefa",
                    "day": "30",
                    "matches": [
                        {
                            "competition_id": "cuefa",
                            "match_start_time": "1285866000"
                        }
                    ]
                }
            ]
        }
    ]
}

Answer 1

在json_encode：

之前添加此内容

foreach ($arr['items'] as &$item) {
    $item = array('block' => array_values($item));
}

通过2个参数对JSON进行分组

1 个答案: