如何将XML单标签类数组及vehicleJson内JSON存储到PHP变量

Hey there! Let's break down your two PHP questions about handling that XML data, step by step.

First, since your XML uses a default namespace (http://regcheck.org.uk), we need to account for that when parsing. We'll use PHP's built-in SimpleXMLElement class to handle the XML smoothly:

// Your raw XML string
$xmlString = '<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": "JCB INDIA LIMITED / JCB 3DX", "RegistrationYear": "2010", "CarMake": { "CurrentTextValue": "JCB INDIA LIMITED" }, "CarModel": { "CurrentTextValue": "JCB 3DX" }, "MakeDescription": { "CurrentTextValue": "JCB INDIA LIMITED" }, "ModelDescription": { "CurrentTextValue": "JCB 3DX" }, "VechileIdentificationNumber": "1710000", "EngineNumber": "XXXXX", "FuelType": { "CurrentTextValue": "DIESEL" }, "RegistrationDate": "13/08/2010", "Owner": "RAMDEBHAI KARANGIYA", "Fitness": "18-Sep-2019", "Insurance": "05-Nov-2019", "Location": "RTO,PORBANDAR HIGHWAY", "ImageUrl": "http://in.carregistrationapi.com/image.aspx/@SkNCIElORElBIExJTUlURUQgLyBKQ0IgM0RY" } </vehicleJson> <vehicleData> <Description>JCB INDIA LIMITED / JCB 3DX</Description> <RegistrationYear>2010</RegistrationYear> <CarMake> <CurrentTextValue>JCB INDIA LIMITED</CurrentTextValue> </CarMake> <CarModel>JCB 3DX</CarModel> </vehicleData> </Vehicle>';

// Parse the XML string into a SimpleXMLElement object
$xml = new SimpleXMLElement($xmlString);

// Access the default namespace to target the correct nodes
$ns = $xml->children('http://regcheck.org.uk');

// Grab the <vehicleData> node
$vehicleData = $ns->vehicleData;

// Extract values into PHP variables (cast to string to get raw text, not object)
$description = (string)$vehicleData->Description;
$registrationYear = (string)$vehicleData->RegistrationYear;
$carMake = (string)$vehicleData->CarMake->CurrentTextValue;
$carModel = (string)$vehicleData->CarModel;

// Optional: Verify the variables
echo "Description: $description \n";
echo "Registration Year: $registrationYear \n";
echo "Car Make: $carMake \n";
echo "Car Model: $carModel \n";

The critical bits here are targeting the default namespace with children() and casting each node to a string—this pulls out the actual text value instead of returning a SimpleXMLElement object.

The <vehicleJson> tag holds a valid JSON string, so we'll extract that string first, decode it into a PHP array/object, then pull out the fields you need:

// Get the raw JSON string from the <vehicleJson> node
$vehicleJsonStr = (string)$ns->vehicleJson;

// Decode JSON into an associative array (use false instead of true for an object)
$vehicleJson = json_decode($vehicleJsonStr, true);

// Add error handling in case JSON parsing fails
if (json_last_error() !== JSON_ERROR_NONE) {
    die('Failed to parse JSON: ' . json_last_error_msg());
}

// Extract specific fields into individual PHP variables
$jsonDescription = $vehicleJson['Description'];
$jsonCarMake = $vehicleJson['CarMake']['CurrentTextValue'];
$owner = $vehicleJson['Owner'];
$fuelType = $vehicleJson['FuelType']['CurrentTextValue'];
$registrationDate = $vehicleJson['RegistrationDate'];

// Optional: Verify the variables
echo "\nFrom JSON Data:\n";
echo "Description: $jsonDescription \n";
echo "Car Make: $jsonCarMake \n";
echo "Owner: $owner \n";
echo "Fuel Type: $fuelType \n";

Using true in json_decode() converts the JSON into an associative array, making it easy to access nested values like CarMake->CurrentTextValue via array keys. If you prefer working with objects, just omit the second parameter (or pass false), then access values like $vehicleJson->CarMake->CurrentTextValue.

内容的提问来源于stack exchange，提问作者Jigar Karangiya