PHP多维数组到SOAP XML的序列化实践与优化

function convertToXml($data, $name='root', &$doc=null, &$node=null){
    if ($doc==null){
        $doc = new DOMDocument('1.0','UTF-8');
        $doc->formatOutput = TRUE;
        $node = $doc;
    }

    if (is_array($data)){
        foreach($data as $var=>$val){
            if (is_numeric($var)){
                // 当数组键是数字时，通常需要特殊处理，这里简单地递归调用，可能导致元素名重复或结构不符
                convertToXml($val, $name, $doc, $node);
            }else{
                // 创建子元素，并递归处理其值
                if (!isset($child)){
                    $child = $doc->createElement($name);
                    $node->appendChild($child);
                }
                convertToXml($val, $var, $doc, $child);
            }
        }
    }else{
        // 处理非数组值，创建文本节点
        $child = $doc->createElement($name);
        $node->appendChild($child);
        $textNode = $doc->createTextNode($data);
        $child->appendChild($textNode);
    }

    if ($doc==$node) return $doc->saveXML();
}

composer require spatie/array-to-xml

$originalData = [
  "name" => "John Doe",
  "date" => "2021-11-30 00:00:00.000",
  "job" => "developer",
  "where_from" => "france",
  "address" => [
    "country" => "france",
    "city" => "paris",
    "vat_number" => "123456"
  ],
  "items" => [
    [
      "cook" => "spoon",
      "clean" => "vacuum"
    ]
  ]
];

<ns1:Person xmlns:ns1="https://ex.pt/webservices">
   <data xsi:type="tns:getPersonInfo">
      <name xsi:type="xsd:string">John</name>
      <surname xsi:type="xsd:string">Doe</surname>
      ...
      <address xsi:type="tns:getAddress">
         <country xsi:type="xsd:string">france</country>
         <city xsi:type="xsd:string">paris</city>
         <post_code xsi:type="xsd:string">12345</post_code>
      </address>
      <items xsi:type="tns:getItems">
         <item xsi:type="xsd:string">
            <name xsi:type="xsd:string">spoon</name>
            <material xsi:type="xsd:string">vacuum</material>
         </item>
         <!-- ... other items -->
      </items>
   </data>
</ns1:Person>

use Spatie\ArrayToXml\ArrayToXml;

$dataForXml = [
    'SOAP-ENV:Body' => [
        'ns1:Person' => [
            // 'info' 这里的键名是根据SOAP XML结构映射的，它会成为一个子元素
            'data' => [ // 对应 <data xsi:type="tns:getPersonInfo">
                "name" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "John Doe"],
                // 假设原始数据中的name被拆分或映射为name和surname
                "surname" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "Doe"],
                "job" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "developer"],
                "from" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "france"],
                "address" => [ // 对应 <address xsi:type="tns:getAddress">
                    "country" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "france"],
                    "city" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "paris"],
                    "post_code" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "123456"], // 注意这里从vat_number变为post_code
                    '_attributes' => ['xsi:type' => 'tns:getAddress'] // address元素的属性
                ],
                "items" => [ // 对应 <items xsi:type="tns:getItems">
                    // 使用 '__custom:item:1' 来表示一个名为 'item' 的重复元素
                    // 这里的 '1' 是一个索引，确保每个 item 元素都是独立的
                    '__custom:item:1' => [
                        "name" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "spoon"],
                        "material" => ['_attributes' => ['xsi:type' => 'xsd:string'], '_value' => "vacuum"],
                        '_attributes' => ['xsi:type' => 'xsd:string'] // item元素的属性，根据XML Schema可能需要
                    ],
                    // 如果有多个 item，可以继续添加 '__custom:item:2' 等
                    '_attributes' => ['xsi:type' => 'tns:getItems'] // items元素的属性
                ],
                '_attributes' => ['xsi:type' => 'tns:getPersonInfo'] // data元素的属性
            ],
            '_attributes' => ['xmlns:ns1' => 'https://ex.pt/webservices'] // ns1:Person元素的属性，定义命名空间
        ],
    ]
];

use Spatie\ArrayToXml\ArrayToXml;

// ... (前面的 $dataForXml 定义)

$response = ArrayToXml::convert($dataForXml, [
    'rootElementName' => 'SOAP-ENV:Envelope', // 定义根元素
    '_attributes' => [ // 为根元素定义属性，包括SOAP和自定义命名空间
        'SOAP-ENV:encodingStyle' => 'http://schemas.xmlsoap.org/soap/encoding/',
        'xmlns:SOAP-ENV' => 'http://schemas.xmlsoap.org/soap/envelope/',
        'xmlns:xsd' => 'http://www.w3.org/2001/XMLSchema',
        'xmlns:xsi' => 'http://www.w3.org/2001/XMLSchema-instance',
        'xmlns:SOAP-ENC' => 'http://schemas.xmlsoap.org/soap/encoding/',
        'xmlns:tns' => 'http://ex.pt/soap/WebServices'
    ],
], true, 'UTF-8'); // 第三个参数为true表示自动格式化输出，第四个参数是编码

echo $response;