PHP中的多维数组推送

我有两个aray

UID

用于两个数组，现在我想从

$userProductsData

获取UPID并推入

$userData

，我已尝试无法正常工作，请任何人更新我的代码 试试这个

$userData = [
    [
        "UID" => "5f10482574d83d4b726fe5",
        "name" => "Yug Gill",
        "orgID" => "5f10481d74d83d4b726",
        "imageURL" => "female.png",
        "UPID" => "5f10482574d83d4b6fe007"
    ]
];

---

您的

$userProductsData

是一个常规数组，它有索引0、1、2等。。。然后，您试图通过字符串键

“5f10482574d83d4b726fe5”

从此数组中获取一个项

$userProductsData

应该是如下所示的键数组：

$userData = [
    [
        "UID" => "5f10482574d83d4b726fe5",
        "name" => "Yug Gill",
        "orgID" => "5f10481d74d83d4b726",
        "imageURL" => "female.png"
    ]
];

$userProductsData = [
    [
    "UPID" => "5f10482574d83d4b6fe007",
    "UID" => "5f10482574d83d4b726fe5",
    ]
];
$userDetailsResult = [];

foreach ($userProductsData as $key => $value) {
    $userData[$key]["UPID"] = $value['UPID'];
   
}

print_r($userData);

---

然后，您可以通过键

“5f10482574d83d4b726fe5”

$userProductsData[$value[“UID”]]

从该数组中获取一个项，该项变成

$userProductsData['5f10482574D483B726FE5']

，并且该键在该数组中没有任何元素。循环每个

$userProductsData

，然后在循环内循环每个

$userData

，然后使用

if

Why

$userDetailsResult=[]？单循环我们无法实现这一点？你所说的单循环是什么意思？这是因为两个foreach循环？如果是这种情况，实际上可以删除第一个foreach循环。

$userData = [
    [
        "UID" => "5f10482574d83d4b726fe5",
        "name" => "Yug Gill",
        "orgID" => "5f10481d74d83d4b726",
        "imageURL" => "female.png"
    ]
];

$userProductsData = [
    [
    "UPID" => "5f10482574d83d4b6fe007",
    "UID" => "5f10482574d83d4b726fe5",
    ]
];
$userDetailsResult = [];

foreach ($userProductsData as $key => $value) {
    $userData[$key]["UPID"] = $value['UPID'];
   
}

print_r($userData);


$userProductsData = [
    "5f10482574d83d4b726fe5" => [
        "UPID" => "5f10482574d83d4b6fe007",
        "UID" => "5f10482574d83d4b726fe5",
    ],
];