有没有一种更简洁的方法来实现这种 XML 到 NHS 数据的 JSON 转换

【问题标题】：Is there a cleaner way to achieve this XML to JSON transformation of NHS data有没有一种更简洁的方法来实现这种 XML 到 NHS 数据的 JSON 转换
【发布时间】：2019-12-27 21:29:15
【问题描述】：

我正在使用来自公共 NHS API 的位置和地址数据，它采用 XML 格式，我已将其转换为 JSON 以在我的 web 应用程序中使用。

我的代码正在运行并产生预期的结果，但是我不禁对这段代码中嵌套的 foreach 循环的数量感到畏缩。

有没有更简洁的方法来获得更高性能的相同结果？

我尝试过使用 simplexml_load_string 和许多变体，但它拒绝输出/解析包含 s:organisationSummary 数据的嵌套元素的内容。

这是 PHP 类

class XmlElement {
    public $name;
    public $attributes;
    public $content;
    public $children;
}

class GpService
{
    protected $apiKey;

    public function __construct()
    {
        $this->apiKey = env('NHS_API_KEY');
    }

    public function xmlToObject($xml) {
        $parser = xml_parser_create();
        xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
        xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
        xml_parse_into_struct($parser, $xml, $tags);
        xml_parser_free($parser);

        $elements = array();  // the currently filling [child] XmlElement array
        $stack = array();
        foreach ($tags as $tag) {
          $index = count($elements);
          if ($tag['type'] == "complete" || $tag['type'] == "open") {
            $elements[$index] = new XmlElement;
            $elements[$index]->name = $tag['tag'];
            $elements[$index]->attributes = (isset($tag['attributes']))?$tag['attributes']:null;
            $elements[$index]->content = (isset($tag['value']))?$tag['value']:null;
            if ($tag['type'] == "open") {  // push
              $elements[$index]->children = array();
              $stack[count($stack)] = &$elements;
              $elements = &$elements[$index]->children;
            }
          }
          if ($tag['type'] == "close") {  // pop
            $elements = &$stack[count($stack) - 1];
            unset($stack[count($stack) - 1]);
          }
        }
        return $elements[0];  // the single top-level element
    }

    public function searchByPostcode($postcode)
    {
        $postcodeRequest = new \GuzzleHttp\Client();
        $postcodeGet = $postcodeRequest->request('GET', 'https://api.nhs.uk/data/gppractices/postcode/' . $postcode . '/?distance=15', [
            'headers' => [
                'subscription-key' => $this->apiKey,
            ]
        ]);

        //Convert the XML string into an SimpleXMLElement object.
        $xmlObject = $this->xmlToObject($postcodeGet->getBody());
        $outputObject = [];

        // Absolutely insane loops to get data into the format I would like
        foreach($xmlObject->children as $key => $entry)
        {
            if($entry->name === 'entry')
            {
                foreach($entry->children as $value)
                {
                    if($value->name === 'content')
                    {
                        foreach($value->children as $objectProperty)
                        {
                            foreach($objectProperty->children as $dataItem)
                            {
                                if(is_array($dataItem->children))
                                {
                                    foreach($dataItem->children as $childKey => $childDataItem)
                                    {
                                        if($childDataItem->name == 's:addressLine')
                                        {
                                            $childDataItem->name = $childDataItem->name . $childKey;
                                        }
                                        $outputObject[$key][str_replace('s:','',strtolower($childDataItem->name))] = $childDataItem->content;
                                    }
                                }
                                else
                                {
                                    $outputObject[$key][str_replace('s:','',strtolower($dataItem->name))] = $dataItem->content;
                                }
                            }
                        }
                    }
                }
            }
        }

        return $outputObject;
    }
}

这是 XML 数据：

<feed xmlns:s="https://api.nhs.uk/data/services" xmlns="https://www.w3.org/2005/Atom">
  <title type="text">NHS website - GP Practices Near Postcode - LE2 1DA - Within 15km</title>
  <id>https://api.nhs.uk/data/gppractices/postcode/le21da?range=15</id>
  <rights type="text">© Crown Copyright 2009</rights>
  <updated>2019-08-22T15:04:20+01:00</updated>
  <category term="Search"/>
  <logo>https://www.nhs.uk/nhscwebservices/documents/logo1.jpg</logo>
  <author>
    <name>NHS website</name>
    <uri>https://www.nhs.uk</uri>
    <email>webservices@nhschoices.nhs.uk</email>
  </author>
  <link rel="self" type="application/xml" title="NHS website - GP Practices Near Postcode - LE2 1DA - Within 15km" href="https://api.nhs.uk/data/gppractices/postcode/LE21DA&amp;range=15"/>
  <link rel="first" type="application/xml" title="first" length="1000" href="https://api.nhs.uk/data/gppractices/postcode/LE21DA&amp;range=15&amp;page=1"/>
  <link rel="next" type="application/xml" title="next" length="1000" href="https://api.nhs.uk/data/gppractices/postcode/LE21DA&amp;range=15&amp;page=2"/>
  <link rel="last" type="application/xml" title="last" length="1000" href="https://api.nhs.uk/data/gppractices/postcode/LE21DA&amp;range=15&amp;page=10"/>
  <tracking xmlns="https://api.nhs.uk/data/services">&lt;img style="border: 0; width: 1px; height: 1px;" alt="" src="https://statse.webtrendslive.com/dcs2221tai1ckz5huxw0mfq86_1m2w/njs.gif?dcsuri=/organisations%2fgppractices%2fpostcode%2fLE21DA&amp;amp;wt.cg_s=OrganisationData&amp;amp;wt.cg_n=syndication&amp;synduserid=7a6ea2a0-8dec-11e9-8e02-f5191ebd3281&amp;syndreviewdate=22-08-2019T14:04&amp;synduserid=7a6ea2a0-8dec-11e9-8e02-f5191ebd3281&amp;syndreviewdate=22-08-2019T14:04"/&gt;</tracking>
  <s:SearchCoords>52.6299,-1.11502</s:SearchCoords>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4863</id>
    <title type="text">Highfields Surgery (R Wadhwa)</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Highfields Surgery (R Wadhwa)" href="https://api.nhs.uk/data/gppractices/4863"/>
    <link rel="alternate" title="Highfields Surgery (R Wadhwa)" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=42231"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Highfields Surgery (R Wadhwa)</s:name>
        <s:odsCode>C82116</s:odsCode>
        <s:address>
          <s:addressLine>25 Severn Street</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 0NN</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162543253</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.11859357357025</s:longitude>
          <s:latitude>52.6293983459473</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.247038430918239</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4901</id>
    <title type="text">Dr R Kapur &amp; Partners</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Dr R Kapur &amp; Partners" href="https://api.nhs.uk/data/gppractices/4901"/>
    <link rel="alternate" title="Dr R Kapur &amp; Partners" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=36753"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Dr R Kapur &amp; Partners</s:name>
        <s:odsCode>C82659</s:odsCode>
        <s:address>
          <s:addressLine>St Peters Health Centre</s:addressLine>
          <s:addressLine>Sparkenhoe Street</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 0TA</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162951258</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.11907768249512</s:longitude>
          <s:latitude>52.6310386657715</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.30219913005026</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4827</id>
    <title type="text">Shefa Medical Practice</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Shefa Medical Practice" href="https://api.nhs.uk/data/gppractices/4827"/>
    <link rel="alternate" title="Shefa Medical Practice" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=38960"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Shefa Medical Practice</s:name>
        <s:odsCode>C82080</s:odsCode>
        <s:address>
          <s:addressLine>St Peters Health Centre</s:addressLine>
          <s:addressLine>Sparkenhoe Street</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 0TA</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162957835</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.11907768249512</s:longitude>
          <s:latitude>52.6310386657715</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.30219913005026</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4902</id>
    <title type="text">St Peter's Health Centre - Mansingh &amp; Partner</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="St Peter's Health Centre - Mansingh &amp; Partner" href="https://api.nhs.uk/data/gppractices/4902"/>
    <link rel="alternate" title="St Peter's Health Centre - Mansingh &amp; Partner" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=35950"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>St Peter's Health Centre - Mansingh &amp; Partner</s:name>
        <s:odsCode>C82660</s:odsCode>
        <s:address>
          <s:addressLine>Sparkenhoe Street</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 0TA</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162957827</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.11907768249512</s:longitude>
          <s:latitude>52.6310386657715</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.30219913005026</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4848</id>
    <title type="text">Al-Waqas Medical Centre</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Al-Waqas Medical Centre" href="https://api.nhs.uk/data/gppractices/4848"/>
    <link rel="alternate" title="Al-Waqas Medical Centre" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=43636"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Al-Waqas Medical Centre</s:name>
        <s:odsCode>C82099</s:odsCode>
        <s:address>
          <s:addressLine>AL-Waqas Medical Practice</s:addressLine>
          <s:addressLine>91 St Peters Road</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 1DJ</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162543003</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.10840618610382</s:longitude>
          <s:latitude>52.6290435791016</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.458084198394662</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4889</id>
    <title type="text">Community Health Centre</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Community Health Centre" href="https://api.nhs.uk/data/gppractices/4889"/>
    <link rel="alternate" title="Community Health Centre" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=42802"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Community Health Centre</s:name>
        <s:odsCode>C82643</s:odsCode>
        <s:address>
          <s:addressLine>Melbourne Centre</s:addressLine>
          <s:addressLine>Melbourne Road</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 0GU</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162622946</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.11336529254913</s:longitude>
          <s:latitude>52.6338653564453</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.462480666213577</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4801</id>
    <title type="text">Sayeed Medical Centre</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Sayeed Medical Centre" href="https://api.nhs.uk/data/gppractices/4801"/>
    <link rel="alternate" title="Sayeed Medical Centre" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=42819"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Sayeed Medical Centre</s:name>
        <s:odsCode>C82060</s:odsCode>
        <s:address>
          <s:addressLine>352-354 East Park Road</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE5 5AY</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01163232030</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.10658276081085</s:longitude>
          <s:latitude>52.630802154541</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.581034496166074</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4759</id>
    <title type="text">Melbourne Street Surgery</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Melbourne Street Surgery" href="https://api.nhs.uk/data/gppractices/4759"/>
    <link rel="alternate" title="Melbourne Street Surgery" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=36620"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Melbourne Street Surgery</s:name>
        <s:odsCode>C82031</s:odsCode>
        <s:address>
          <s:addressLine>56 Melbourne Street</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 0AS</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162536299</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.11437559127808</s:longitude>
          <s:latitude>52.636344909668</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.717122615984056</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4770</id>
    <title type="text">East Park Medical Centre - R P Pandya</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="East Park Medical Centre - R P Pandya" href="https://api.nhs.uk/data/gppractices/4770"/>
    <link rel="alternate" title="East Park Medical Centre - R P Pandya" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=40574"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>East Park Medical Centre - R P Pandya</s:name>
        <s:odsCode>C82037</s:odsCode>
        <s:address>
          <s:addressLine>264-266 East Park Road</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE5 5FD</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>01162736330</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.10444343090057</s:longitude>
          <s:latitude>52.633544921875</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.822717143851754</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
  <entry>
    <id>https://api.nhs.uk/data/gppractices/4834</id>
    <title type="text">Evington Medical Centre</title>
    <updated>2019-08-22T14:04:20Z</updated>
    <link rel="self" title="Evington Medical Centre" href="https://api.nhs.uk/data/gppractices/4834"/>
    <link rel="alternate" title="Evington Medical Centre" href="https://www.nhs.uk/Services/GP/Overview/DefaultView.aspx?id=36363"/>
    <content type="application/xml">
      <s:organisationSummary>
        <s:name>Evington Medical Centre</s:name>
        <s:odsCode>C82088</s:odsCode>
        <s:address>
          <s:addressLine>2 - 6 Halsbury Street</s:addressLine>
          <s:addressLine>Leicester</s:addressLine>
          <s:addressLine>Leicestershire</s:addressLine>
          <s:postcode>LE2 1QA</s:postcode>
        </s:address>
        <s:contact type="General">
          <s:telephone>0116 3190343</s:telephone>
        </s:contact>
        <s:geographicCoordinates>
          <s:longitude>-1.10676002502441</s:longitude>
          <s:latitude>52.624267578125</s:latitude>
        </s:geographicCoordinates>
        <s:Distance>0.834829502560211</s:Distance>
      </s:organisationSummary>
    </content>
  </entry>
</feed>

这是我期待的输出：

{
   "success":true,
   "data":{
      "13":{
         "name":"Highfields Surgery (R Wadhwa)",
         "odscode":"C82116",
         "addressline0":"25 Severn Street",
         "addressline1":"Leicester",
         "addressline2":"Leicestershire",
         "postcode":"LE2 0NN",
         "telephone":"01162543253",
         "longitude":"-1.11859357357025",
         "latitude":"52.6293983459473",
         "distance":"0.247038430918239"
      },
      "14":{
         "name":"Dr R Kapur & Partners",
         "odscode":"C82659",
         "addressline0":"St Peters Health Centre",
         "addressline1":"Sparkenhoe Street",
         "addressline2":"Leicester",
         "addressline3":"Leicestershire",
         "postcode":"LE2 0TA",
         "telephone":"01162951258",
         "longitude":"-1.11907768249512",
         "latitude":"52.6310386657715",
         "distance":"0.30219913005026"
      },
      "15":{
         "name":"Shefa Medical Practice",
         "odscode":"C82080",
         "addressline0":"St Peters Health Centre",
         "addressline1":"Sparkenhoe Street",
         "addressline2":"Leicester",
         "addressline3":"Leicestershire",
         "postcode":"LE2 0TA",
         "telephone":"01162957835",
         "longitude":"-1.11907768249512",
         "latitude":"52.6310386657715",
         "distance":"0.30219913005026"
      },
      "16":{
         "name":"St Peter's Health Centre - Mansingh & Partner",
         "odscode":"C82660",
         "addressline0":"Sparkenhoe Street",
         "addressline1":"Leicester",
         "addressline2":"Leicestershire",
         "postcode":"LE2 0TA",
         "telephone":"01162957827",
         "longitude":"-1.11907768249512",
         "latitude":"52.6310386657715",
         "distance":"0.30219913005026"
      },
      "17":{
         "name":"Al-Waqas Medical Centre",
         "odscode":"C82099",
         "addressline0":"AL-Waqas Medical Practice",
         "addressline1":"91 St Peters Road",
         "addressline2":"Leicester",
         "addressline3":"Leicestershire",
         "postcode":"LE2 1DJ",
         "telephone":"01162543003",
         "longitude":"-1.10840618610382",
         "latitude":"52.6290435791016",
         "distance":"0.458084198394662"
      },
      "18":{
         "name":"Community Health Centre",
         "odscode":"C82643",
         "addressline0":"Melbourne Centre",
         "addressline1":"Melbourne Road",
         "addressline2":"Leicester",
         "addressline3":"Leicestershire",
         "postcode":"LE2 0GU",
         "telephone":"01162622946",
         "longitude":"-1.11336529254913",
         "latitude":"52.6338653564453",
         "distance":"0.462480666213577"
      },
      "19":{
         "name":"Sayeed Medical Centre",
         "odscode":"C82060",
         "addressline0":"352-354 East Park Road",
         "addressline1":"Leicester",
         "addressline2":"Leicestershire",
         "postcode":"LE5 5AY",
         "telephone":"01163232030",
         "longitude":"-1.10658276081085",
         "latitude":"52.630802154541",
         "distance":"0.581034496166074"
      },
      "20":{
         "name":"Melbourne Street Surgery",
         "odscode":"C82031",
         "addressline0":"56 Melbourne Street",
         "addressline1":"Leicester",
         "addressline2":"Leicestershire",
         "postcode":"LE2 0AS",
         "telephone":"01162536299",
         "longitude":"-1.11437559127808",
         "latitude":"52.636344909668",
         "distance":"0.717122615984056"
      },
      "21":{
         "name":"East Park Medical Centre - R P Pandya",
         "odscode":"C82037",
         "addressline0":"264-266 East Park Road",
         "addressline1":"Leicester",
         "addressline2":"Leicestershire",
         "postcode":"LE5 5FD",
         "telephone":"01162736330",
         "longitude":"-1.10444343090057",
         "latitude":"52.633544921875",
         "distance":"0.822717143851754"
      },
      "22":{
         "name":"Evington Medical Centre",
         "odscode":"C82088",
         "addressline0":"2 - 6 Halsbury Street",
         "addressline1":"Leicester",
         "addressline2":"Leicestershire",
         "postcode":"LE2 1QA",
         "telephone":"0116 3190343",
         "longitude":"-1.10676002502441",
         "latitude":"52.624267578125",
         "distance":"0.834829502560211"
      }
   }
}

【问题讨论】：

  • 使用不同的 XML 解析器可能会更好。我写了这个，人们似乎很喜欢：github.com/sabre-io/xml
  • @Evert 谢谢，我去看看

标签： php json xml foreach


【解决方案1】：

您需要使用适当的方法来遍历 XML 文档，而不是查看每个元素并检查其名称。

您的两个最佳选择是 DOM 方法和 XPath。如果您使用过前端 JavaScript 代码（例如 document.getElementsByTagName 或 document.getElementById），您会熟悉前者。后者的学习曲线更陡峭，但功能更强大。 （XSLT 也是转换 XML 的一个不错的选择，但我对它不是很熟悉。）

不过，第一步是使用适当的 XML 库。您使用的 XML 函数是 very 低级的。我建议改用 PHP 的 DomDocument 扩展名。让我们潜入！

<?php
$xml = file_get_contents("nhs.xml");
// assume XML document is stored in a variable called $xml
$dom = new DomDocument;
$dom->loadXml($xml);
// thankfully we can ignore namespaces!
$summaries = $dom->getElementsByTagName("organisationSummary");
// go through each <organisationSummary> element
foreach ($summaries as $os) {
    $entry_data = [
        // note we're using $os and not $dom now, so we get child elements of this particular element
        "name"         => $os->getElementsByTagName("name")[0]->textContent,
        "odscode"      => $os->getElementsByTagName("odsCode")[0]->textContent,
        "addressline0" => $os->getElementsByTagName("addressLine")[0]->textContent,
        // provide a default empty string in case there's no further lines
        "addressline1" => $os->getElementsByTagName("addressLine")[1]->textContent ?? "",
        "addressline2" => $os->getElementsByTagName("addressLine")[2]->textContent ?? "",
        "addressline3" => $os->getElementsByTagName("addressLine")[3]->textContent ?? "",
        "postcode"     => $os->getElementsByTagName("postcode")[0]->textContent,
        "telephone"    => $os->getElementsByTagName("telephone")[0]->textContent,
        "longitude"    => $os->getElementsByTagName("longitude")[0]->textContent,
        "latitude"     => $os->getElementsByTagName("latitude")[0]->textContent,
        "distance"     => $os->getElementsByTagName("Distance")[0]->textContent,
    ];
    $json_data[] = $entry_data;
}
if (count($json_data)) {
    $output = ["success" => true, "data" => $json_data];
} else {
    $output = ["success" => false];
}
echo json_encode($output, JSON_PRETTY_PRINT);

【讨论】：

    【解决方案2】：

    您可以使用 DOM 和 XPath 表达式。所有数据都在{https://api.nhs.uk/data/services}organisationSummary 节点内。

    以下示例为命名空间 https://api.nhs.uk/data/services 注册前缀 service（这就是您示例中的 s 解析的内容）。然后它使用//service:organisationSummary 表达式获取任何{https://api.nhs.uk/data/services}organisationSummary 节点。

    对于每个组织，它使用标量值的表达式构建一个$item 变量。 {https://api.nhs.uk/data/services}addressLine 节点使用循环。

    // create the DOM document and load the XML 
$document = new DOMDocument();
$document->loadXML($xml);
// create an Xpath instance for the document - register namespace
$xpath = new DOMXpath($document);
$xpath->registerNamespace('service', 'https://api.nhs.uk/data/services');
$json = [
  "success" => true,
  // force object for data - it will be an array otherwise
  "data" => new stdClass()
];

// iterate over all organisationSummary nodes
foreach ($xpath->evaluate('//service:organisationSummary') as $index => $organisation) {
  // fetch single values
  $item = [
    "name" => $xpath->evaluate('string(service:name)', $organisation),
    "odscode" => $xpath->evaluate('string(service:odsCode)', $organisation),
    "postcode" => $xpath->evaluate('string(service:address/service:postcode)', $organisation),
    "telephone" => $xpath->evaluate('string(service:contact/service:telephone)', $organisation),
    "longitude" => $xpath->evaluate('string(service:geographicCoordinates/service:longitude)', $organisation),
    "latitude" => $xpath->evaluate('string(service:geographicCoordinates/service:latitude)', $organisation),
    "distance" => $xpath->evaluate('string(service:Distance)', $organisation)
  ];
  // add the addressLine values
  foreach ($xpath->evaluate('service:address/service:addressLine', $organisation) as $lineIndex => $line) {
    $item['addressline'.$lineIndex] = $line->textContent;
  }
  // add the $item
  $json['data']->{$index} = $item;
}

echo json_encode($json, JSON_PRETTY_PRINT);

    输出：

    {
    "success": true,
    "data": {
        "0": {
            "name": "Highfields Surgery (R Wadhwa)",
            "odscode": "C82116",
            "postcode": "LE2 0NN",
            "telephone": "01162543253",
            "longitude": "-1.11859357357025",
            "latitude": "52.6293983459473",
            "distance": "0.247038430918239",
            "addressline0": "25 Severn Street",
            "addressline1": "Leicester",
            "addressline2": "Leicestershire"
        },
        "1": {
            "name": "Dr R Kapur & Partners",
            "odscode": "C82659",
            "postcode": "LE2 0TA",
            "telephone": "01162951258",
            "longitude": "-1.11907768249512",
            "latitude": "52.6310386657715",
            "distance": "0.30219913005026",
            "addressline0": "St Peters Health Centre",
            "addressline1": "Sparkenhoe Street",
            "addressline2": "Leicester",
            "addressline3": "Leicestershire"
        },
        ...

    【讨论】：

    • 非常感谢，我会在 xpath 上做更多的阅读，因为我还没有真正尝试过
    猜你喜欢
    • 1970-01-01
    • 2019-07-21
    • 2017-05-20
    • 1970-01-01
    • 2023-03-17
    • 2021-11-15
    • 1970-01-01
    • 1970-01-01
    • 2023-04-03
    相关资源
    最近更新 更多
    热门标签
    Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode