Question

我正在尝试在php的for循环中使用带有键值对的array_push，但是在那里什么也没得到，我只得到2个没有值的键，谁能看到我在做什么错，< / p>

任何帮助将不胜感激。

$totalItems = $dataArray["totalItemsCount"];
$linkNamesTaken = array();
for($i=0; $i<$totalItems; $i++) {
   array_push($linkNamesTaken[$dataArray["data"][$i]["subMediaType"]], $dataArray["data"][$i]["code"]);
}

print_r($linkNamesTaken);

我只得到

 [Track] => 
 [Album] =>

我期望类似

[Track] => LSD-ThundercloudswithSiaDiploLabrinth-Single
[Album] => DuaLipa-ElectricitywithDuaLipa-Album

dataArray包含如下数据

{"totalItemsCount": 7,
 "data": [
    {
        "id": "366eff50-d6e2-4038-a091-4b84849c7e9e",
        "url": "https://APItestboard.lnk.to/GeorgeEzra-Shotgun-Single",
        "code": "GeorgeEzra-Shotgun-Single",
        "subMediaType": "Track"
    },
   ... 6 more items here like above

 ]
}

Answer 1

也许您正在寻找类似的东西？

$totalItems = $dataArray["totalItemsCount"];
$linkNamesTaken = array();
foreach($totalItems as $key => $value) {
   foreach($value['data'] as $key2 => $value2) {
       $linkNamesTaken[]['subMediaType'] = $value2['subMediaType'];
       $linkNamesTaken[]['code'] = $value2['code'];
   }
}

Answer 2

在这里，您的subMediaType数组中的键具有code和值为linkNamesTaken的键

$linkNamesTaken = array();
foreach($dataArray['data'] as $k1 => $v1) { //7 loop on key value pair
      $linkNamesTaken[$v1['subMediaType']] = $v1['code']; // hopefully key value should be unique.
}

print_r($linkNamesTaken);

O / P

Array
(
    [Track] => GeorgeEzra-Shotgun-Single
    [New Track] => GeorgeEzra-Shotgun-Double
)

编辑：请参见http://php.net/manual/en/function.array-push.php#108118

如何在PHP的for循环中使用带有键值的array_push

2 个答案: