在 PHP 中提取 XML 中包含的一些 JSON

Posted 2023-02-24

【中文标题】在 PHP 中提取 XML 中包含的一些 JSON

【英文标题】：Extract some JSON contained in an XML in PHP

【发布时间】：2021-01-16 20:51:45

【问题描述】：

我正在尝试提取我的 XML 文件中包含的一些 JSON，然后检索这些值。

我的 XML 是：

<Vehicle xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://regcheck.org.uk">
  <vehicleJson>
  "Description": "RENAULT SCÉNIC III",
  "RegistrationYear": "2016",
  "CarMake": 
    "CurrentTextValue": "RENAULT"
  ,
  "CarModel": 
    "CurrentTextValue": "SCÉNIC III"
  ,
  "EngineSize": 
    "CurrentTextValue": "5"
  ,
  "FuelType": 
    "CurrentTextValue": "DIESEL"
  ,
  "MakeDescription": 
    "CurrentTextValue": "RENAULT"
  ,
  "ModelDescription": 
    "CurrentTextValue": "SCÉNIC III"
  ,
  "Immobiliser": 
    "CurrentTextValue": ""
  ,
  "IndicativeValue": 
    "CurrentTextValue": 0
  ,
  "DriverSide": 
    "CurrentTextValue": ""
  ,
  "BodyStyle": 
    "CurrentTextValue": "MONOSPACE COMPACT"
  ,
  "RegistrationDate": "2016-06-24",
  "ImageUrl": "http://immatriculationapi.com/image.aspx/@UkVOQVVMVCBTQ8OJTklDIElJSQ==",
  "ExtendedData": 
    "anneeSortie": "2016",
    "boiteDeVitesse": "",
    "carburantVersion": "D",
    "carrosserieVersion": "",
    "classeSra": "",
    "libVersion": "1.5 dCi 1461cm3 110cv ",
    "libelleModele": "SCÉNIC III",
    "marque": "RE",
    "modele": "",
    "produit": "",
    "puissance": "5",
    "version": "",
    "cleCarrosserie": "",
    "groupeSra": "",
    "nbPlace": "5",
    "datePremiereMiseCirculation": "24062016",
    "questionBatterie": "",
    "electrique": "",
    "genre": "",
    "typeVehicule": "",
    "numSerieMoteur": "VF1JZ890H55864144",
    "valeurANeufSRA": "",
    "niveauRisqueVol": "",
    "protectionConstructeur": "",
    "puissanceDyn": "110",
    "segmentVeh": "",
    "KtypeId": "5853",
    "EngineCC": "1461",
    "Co2": "105",
    "Cylinders": "4",
    "CNIT": "M10RENVP472E768"
  
</vehicleJson>
  <vehicleData>
    <Description>RENAULT SCÉNIC III</Description>
    <RegistrationYear>2016</RegistrationYear>
    <CarMake>
      <CurrentTextValue>RENAULT</CurrentTextValue>
    </CarMake>
    <CarModel>SCÉNIC III</CarModel>
    <BodyStyle>
      <CurrentTextValue>MONOSPACE COMPACT</CurrentTextValue>
    </BodyStyle>
    <EngineSize>
      <CurrentTextValue>5</CurrentTextValue>
    </EngineSize>
    <NumberOfDoors>
      <CurrentValue>5</CurrentValue>
    </NumberOfDoors>
    <Transmission>
      <CurrentValue />
    </Transmission>
    <FuelType>
      <CurrentTextValue>DIESEL</CurrentTextValue>
    </FuelType>
    <Immobiliser>
      <CurrentTextValue />
    </Immobiliser>
    <NumberOfSeats>
      <CurrentValue>5</CurrentValue>
    </NumberOfSeats>
  </vehicleData>
</Vehicle>

第 1 步：我正在寻找包含在 ExtendedData 中的 Description 和一些值：

$xml = simplexml_load_string($my_xml) or die("Error: Cannot create object");
$infos_plaque = json_encode($xml->vehicleJson); // The attribute where the JSON is stored
$array = json_decode($infos_plaque);
echo "<pre>";
print_r($array);
echo "</pre>";

这个 $array 返回：

    stdClass Object
(
    [0] => 
  "Description": "RENAULT SCÉNIC III",
  "RegistrationYear": "2016",
  "CarMake": 
    "CurrentTextValue": "RENAULT"
  ,
  "CarModel": 
    "CurrentTextValue": "SCÉNIC III"
  ,
  "EngineSize": 
    "CurrentTextValue": "5"
  ,
  "FuelType": 
    "CurrentTextValue": "DIESEL"
  ,
  "MakeDescription": 
    "CurrentTextValue": "RENAULT"
  ,
  "ModelDescription": 
    "CurrentTextValue": "SCÉNIC III"
  ,
  "Immobiliser": 
    "CurrentTextValue": ""
  ,
  "IndicativeValue": 
    "CurrentTextValue": 0
  ,
  "DriverSide": 
    "CurrentTextValue": ""
  ,
  "BodyStyle": 
    "CurrentTextValue": "MONOSPACE COMPACT"
  ,
  "RegistrationDate": "2016-06-24",
  "ImageUrl": "http://immatriculationapi.com/image.aspx/@UkVOQVVMVCBTQ8OJTklDIElJSQ==",
  "ExtendedData": 
    "anneeSortie": "2016",
    "boiteDeVitesse": "",
    "carburantVersion": "D",
    "carrosserieVersion": "",
    "classeSra": "",
    "libVersion": "1.5 dCi 1461cm3 110cv ",
    "libelleModele": "SCÉNIC III",
    "marque": "RE",
    "modele": "",
    "produit": "",
    "puissance": "5",
    "version": "",
    "cleCarrosserie": "",
    "groupeSra": "",
    "nbPlace": "5",
    "datePremiereMiseCirculation": "24062016",
    "questionBatterie": "",
    "electrique": "",
    "genre": "",
    "typeVehicule": "",
    "numSerieMoteur": "VF1JZ890H55864144",
    "valeurANeufSRA": "",
    "niveauRisqueVol": "",
    "protectionConstructeur": "",
    "puissanceDyn": "110",
    "segmentVeh": "",
    "KtypeId": "5853",
    "EngineCC": "1461",
    "Co2": "105",
    "Cylinders": "4",
    "CNIT": "M10RENVP472E768"
  

)

第2步：我尝试通过提出不同的请求来检索值：

    print_r($array->Description);
    print_r($array->'RegistrationDate');  
    print_r($array->'ExtendedData'->'puissance');
    print_r($array->ExtendedData->puissance);

// or :   
          
    echo $array->Description;
    echo $array->ExtendedData->puissance;
    echo $array->ExtendedData->libVersion;

我认为在编码 Json 时存在问题，我尝试了不同的解决方案但没有成功。

【参考方案1】：

您只需要将 JSON解码 成 php 数据结构。然后你就可以访问它的属性了

$xml = simplexml_load_string($my_xml);
$data = json_decode($xml->vehicleJson); // ? just decode the string

echo $data->Description;
echo $data->ExtendedData->puissance;
echo $data->ExtendedData->libVersion;

演示~https://3v4l.org/ZjE9H