如何用PHP从XML创建SOAP请求

<?php
// 创建一个XML字符串
$xmlString = '<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
        <GetWeather xmlns="http://www.example.com/weather">
            <City>Beijing</City>
        </GetWeather>
    </soap:Body>
</soap:Envelope>';

// 创建SOAP请求对象
$soapClient = new SoapClient(null, array(
    'location' => "http://example.com/soap-server.php",
    'uri'      => "http://www.example.com/weather",
    'trace'    => 1,
));

// 发送SOAP请求
$response = $soapClient->__doRequest($xmlString, "http://www.example.com/weather", "http://schemas.xmlsoap.org/soap/envelope/");

// 解析SOAP响应
$dom = new DOMDocument();
$dom->loadXML($response);
$result = $dom->getElementsByTagName('GetWeatherResult')->item(0)->nodeValue;

// 打印结果
echo $result;
?>