从Json Array PHP提取此字段

Question

嗨，大家好，我一直在使用通过api返回的JSON数组。

[ 
{ "Id": "81654bdf-f56d-4e0e-ad3a-57860ad5be24", 
"Name": "TESCO PLC", 
"Address": { "StreetNumber": null, 
         "StreetName": "TESCO HOUSE SHIRE PARK", 
         "PostCode": "AL7 1GA", 
         "City": "WELWYN GARDEN CITY", 
         "StateCode": "AL", 
         "CountryCode": "GB" }, 
"PhoneNumber": "44-1992632222", 
"LegalFormCode": "PLC", 
"ExternalIds": [ { "ExternalId": "1057587", "ExternalService": "eulerid" },
             { "ExternalId": "00445790", "ExternalService": "CRO" }, 
             { "ExternalId": "216854067", "ExternalService": "DUN" }, 
             { "ExternalId": "2189357501", "ExternalService": "HRM" }, 
             { "ExternalId": "220430231", "ExternalService": "TVAGB" }, 
             { "ExternalId": "345370", "ExternalService": "ACI" }, 
             { "ExternalId": "376445", "ExternalService": "HCIS" }, 
             { "ExternalId": "38", "ExternalService": "GROUP" }, 
             { "ExternalId": "432577", "ExternalService": "PNCH" }, 
             { "ExternalId": "5594389", "ExternalService": "SIACID" }, 
             { "ExternalId": "574064", "ExternalService": "EHIPNR" }, 
             { "ExternalId": "7013000615", "ExternalService": "EURODB" }, 
             { "ExternalId": "FE0181198", "ExternalService": "SFACID" }, 
             { "ExternalId": "G14788", "ExternalService": "KMV" } ] },

要提取街道名称，我使用了：$ buyerStreetName = $ row ['Address'] ['StreetName'];

我现在如何尝试捕获eulerid，却不知道如何处理，因为它没有唯一的字段名称，因此我需要获取ExternalId = ExternalService = eulerid

谢谢你的帮助

Answer 1

这应该可以解决问题：

<?php

foreach ($row['ExternalIds'] as $val)
{
    if ($val['ExternalService'] == 'eulerid') {
         $externalId = $val['ExternalId'];
    }
}

Answer 2

我倾向于使用array_column()创建数据的关联数组以array_column()访问，因此代码可以归结为...

foreach ( $data as $row )   {
    $externalIds = $row["ExternalIds"];
    $externalIds = array_column($externalIds, "ExternalId", "ExternalService");
    echo $externalIds["eulerid"];
}

（外部的foreach()可能已经存在，只是为了完整起见）