WSDL文件究竟是什么，以及它将如何与PHP的API集成一起工作

找到WSDL的一些示例文件，它的工作流程是什么以及它如何与PHP语言的API集成。我在最近的工作中使用WSDL soapclient，我对WSDL不太熟悉，我想更多地了解WSDL文件在使用WSDL文件时究竟做了什么。

<wsdl:definitions xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://ws.cdyne.com/WeatherWS/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://ws.cdyne.com/WeatherWS/">
<wsdl:types>
<s:schema elementFormDefault="qualified" targetNamespace="http://ws.cdyne.com/WeatherWS/">
<s:element name="GetWeatherInformation">
<s:complexType/>
</s:element>
<s:element name="GetWeatherInformationResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="GetWeatherInformationResult" type="tns:ArrayOfWeatherDescription"/>
</s:sequence>
</s:complexType>
</s:element>
<s:complexType name="ArrayOfWeatherDescription">
<s:sequence>
<s:element minOccurs="0" maxOccurs="unbounded" name="WeatherDescription" type="tns:WeatherDescription"/>
</s:sequence>
</s:complexType>
<s:complexType name="WeatherDescription">
<s:sequence>
<s:element minOccurs="1" maxOccurs="1" name="WeatherID" type="s:short"/>
<s:element minOccurs="0" maxOccurs="1" name="Description" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="PictureURL" type="s:string"/>
</s:sequence>
</s:complexType>
<s:element name="GetCityForecastByZIP">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="ZIP" type="s:string"/>
</s:sequence>
</s:complexType>
</s:element>
<s:element name="GetCityForecastByZIPResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="GetCityForecastByZIPResult" type="tns:ForecastReturn"/>
</s:sequence>
</s:complexType>
</s:element>
<s:complexType name="ForecastReturn">
<s:sequence>
<s:element minOccurs="1" maxOccurs="1" name="Success" type="s:boolean"/>
<s:element minOccurs="0" maxOccurs="1" name="ResponseText" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="State" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="City" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="WeatherStationCity" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="ForecastResult" type="tns:ArrayOfForecast"/>
</s:sequence>
</s:complexType>
<s:complexType name="ArrayOfForecast">
<s:sequence>
<s:element minOccurs="0" maxOccurs="unbounded" name="Forecast" nillable="true" type="tns:Forecast"/>
</s:sequence>
</s:complexType>
<s:complexType name="Forecast">
<s:sequence>
<s:element minOccurs="1" maxOccurs="1" name="Date" type="s:dateTime"/>
<s:element minOccurs="1" maxOccurs="1" name="WeatherID" type="s:short"/>
<s:element minOccurs="0" maxOccurs="1" name="Desciption" type="s:string"/>
<s:element minOccurs="1" maxOccurs="1" name="Temperatures" type="tns:temp"/>
<s:element minOccurs="1" maxOccurs="1" name="ProbabilityOfPrecipiation" type="tns:POP"/>
</s:sequence>
</s:complexType>
<s:complexType name="temp">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="MorningLow" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="DaytimeHigh" type="s:string"/>
</s:sequence>
</s:complexType>
<s:complexType name="POP">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="Nighttime" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Daytime" type="s:string"/>
</s:sequence>
</s:complexType>
<s:element name="GetCityWeatherByZIP">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="ZIP" type="s:string"/>
</s:sequence>
</s:complexType>
</s:element>
<s:element name="GetCityWeatherByZIPResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="1" maxOccurs="1" name="GetCityWeatherByZIPResult" type="tns:WeatherReturn"/>
</s:sequence>
</s:complexType>
</s:element>
<s:complexType name="WeatherReturn">
<s:sequence>
<s:element minOccurs="1" maxOccurs="1" name="Success" type="s:boolean"/>
<s:element minOccurs="0" maxOccurs="1" name="ResponseText" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="State" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="City" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="WeatherStationCity" type="s:string"/>
<s:element minOccurs="1" maxOccurs="1" name="WeatherID" type="s:short"/>
<s:element minOccurs="0" maxOccurs="1" name="Description" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Temperature" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="RelativeHumidity" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Wind" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Pressure" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Visibility" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="WindChill" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Remarks" type="s:string"/>
</s:sequence>
</s:complexType>
<s:element name="ArrayOfWeatherDescription" nillable="true" type="tns:ArrayOfWeatherDescription"/>
<s:element name="ForecastReturn" nillable="true" type="tns:ForecastReturn"/>
<s:element name="WeatherReturn" type="tns:WeatherReturn"/>
</s:schema>
</wsdl:types>
<wsdl:message name="GetWeatherInformationSoapIn">
<wsdl:part name="parameters" element="tns:GetWeatherInformation"/>
</wsdl:message>
<wsdl:message name="GetWeatherInformationSoapOut">
<wsdl:part name="parameters" element="tns:GetWeatherInformationResponse"/>
</wsdl:message>
<wsdl:message name="GetCityForecastByZIPSoapIn">
<wsdl:part name="parameters" element="tns:GetCityForecastByZIP"/>
</wsdl:message>
<wsdl:message name="GetCityForecastByZIPSoapOut">
<wsdl:part name="parameters" element="tns:GetCityForecastByZIPResponse"/>
</wsdl:message>
<wsdl:message name="GetCityWeatherByZIPSoapIn">
<wsdl:part name="parameters" element="tns:GetCityWeatherByZIP"/>
</wsdl:message>
<wsdl:message name="GetCityWeatherByZIPSoapOut">
<wsdl:part name="parameters" element="tns:GetCityWeatherByZIPResponse"/>
</wsdl:message>
<wsdl:message name="GetWeatherInformationHttpGetIn"/>
<wsdl:message name="GetWeatherInformationHttpGetOut">
<wsdl:part name="Body" element="tns:ArrayOfWeatherDescription"/>
</wsdl:message>
<wsdl:message name="GetCityForecastByZIPHttpGetIn">
<wsdl:part name="ZIP" type="s:string"/>
</wsdl:message>
<wsdl:message name="GetCityForecastByZIPHttpGetOut">
<wsdl:part name="Body" element="tns:ForecastReturn"/>
</wsdl:message>
<wsdl:message name="GetCityWeatherByZIPHttpGetIn">
<wsdl:part name="ZIP" type="s:string"/>
</wsdl:message>
<wsdl:message name="GetCityWeatherByZIPHttpGetOut">
<wsdl:part name="Body" element="tns:WeatherReturn"/>
</wsdl:message>
<wsdl:message name="GetWeatherInformationHttpPostIn"/>
<wsdl:message name="GetWeatherInformationHttpPostOut">
<wsdl:part name="Body" element="tns:ArrayOfWeatherDescription"/>
</wsdl:message>
<wsdl:message name="GetCityForecastByZIPHttpPostIn">
<wsdl:part name="ZIP" type="s:string"/>
</wsdl:message>
<wsdl:message name="GetCityForecastByZIPHttpPostOut">
<wsdl:part name="Body" element="tns:ForecastReturn"/>
</wsdl:message>
<wsdl:message name="GetCityWeatherByZIPHttpPostIn">
<wsdl:part name="ZIP" type="s:string"/>
</wsdl:message>
<wsdl:message name="GetCityWeatherByZIPHttpPostOut">
<wsdl:part name="Body" element="tns:WeatherReturn"/>
</wsdl:message>
<wsdl:portType name="WeatherSoap">
<wsdl:operation name="GetWeatherInformation">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">Gets Information for each WeatherID</wsdl:documentation>
<wsdl:input message="tns:GetWeatherInformationSoapIn"/>
<wsdl:output message="tns:GetWeatherInformationSoapOut"/>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
Allows you to get your City Forecast Over the Next 7 Days, which is updated hourly. U.S. Only
</wsdl:documentation>
<wsdl:input message="tns:GetCityForecastByZIPSoapIn"/>
<wsdl:output message="tns:GetCityForecastByZIPSoapOut"/>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
Allows you to get your City's Weather, which is updated hourly. U.S. Only
</wsdl:documentation>
<wsdl:input message="tns:GetCityWeatherByZIPSoapIn"/>
<wsdl:output message="tns:GetCityWeatherByZIPSoapOut"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:portType name="WeatherHttpGet">
<wsdl:operation name="GetWeatherInformation">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">Gets Information for each WeatherID</wsdl:documentation>
<wsdl:input message="tns:GetWeatherInformationHttpGetIn"/>
<wsdl:output message="tns:GetWeatherInformationHttpGetOut"/>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
Allows you to get your City Forecast Over the Next 7 Days, which is updated hourly. U.S. Only
</wsdl:documentation>
<wsdl:input message="tns:GetCityForecastByZIPHttpGetIn"/>
<wsdl:output message="tns:GetCityForecastByZIPHttpGetOut"/>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
Allows you to get your City's Weather, which is updated hourly. U.S. Only
</wsdl:documentation>
<wsdl:input message="tns:GetCityWeatherByZIPHttpGetIn"/>
<wsdl:output message="tns:GetCityWeatherByZIPHttpGetOut"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:portType name="WeatherHttpPost">
<wsdl:operation name="GetWeatherInformation">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">Gets Information for each WeatherID</wsdl:documentation>
<wsdl:input message="tns:GetWeatherInformationHttpPostIn"/>
<wsdl:output message="tns:GetWeatherInformationHttpPostOut"/>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
Allows you to get your City Forecast Over the Next 7 Days, which is updated hourly. U.S. Only
</wsdl:documentation>
<wsdl:input message="tns:GetCityForecastByZIPHttpPostIn"/>
<wsdl:output message="tns:GetCityForecastByZIPHttpPostOut"/>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
Allows you to get your City's Weather, which is updated hourly. U.S. Only
</wsdl:documentation>
<wsdl:input message="tns:GetCityWeatherByZIPHttpPostIn"/>
<wsdl:output message="tns:GetCityWeatherByZIPHttpPostOut"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="WeatherSoap" type="tns:WeatherSoap">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="GetWeatherInformation">
<soap:operation soapAction="http://ws.cdyne.com/WeatherWS/GetWeatherInformation" style="document"/>
<wsdl:input>
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<soap:operation soapAction="http://ws.cdyne.com/WeatherWS/GetCityForecastByZIP" style="document"/>
<wsdl:input>
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<soap:operation soapAction="http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP" style="document"/>
<wsdl:input>
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:binding name="WeatherSoap12" type="tns:WeatherSoap">
<soap12:binding transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="GetWeatherInformation">
<soap12:operation soapAction="http://ws.cdyne.com/WeatherWS/GetWeatherInformation" style="document"/>
<wsdl:input>
<soap12:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap12:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<soap12:operation soapAction="http://ws.cdyne.com/WeatherWS/GetCityForecastByZIP" style="document"/>
<wsdl:input>
<soap12:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap12:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<soap12:operation soapAction="http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP" style="document"/>
<wsdl:input>
<soap12:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap12:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:binding name="WeatherHttpGet" type="tns:WeatherHttpGet">
<http:binding verb="GET"/>
<wsdl:operation name="GetWeatherInformation">
<http:operation location="/GetWeatherInformation"/>
<wsdl:input>
<http:urlEncoded/>
</wsdl:input>
<wsdl:output>
<mime:mimeXml part="Body"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<http:operation location="/GetCityForecastByZIP"/>
<wsdl:input>
<http:urlEncoded/>
</wsdl:input>
<wsdl:output>
<mime:mimeXml part="Body"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<http:operation location="/GetCityWeatherByZIP"/>
<wsdl:input>
<http:urlEncoded/>
</wsdl:input>
<wsdl:output>
<mime:mimeXml part="Body"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:binding name="WeatherHttpPost" type="tns:WeatherHttpPost">
<http:binding verb="POST"/>
<wsdl:operation name="GetWeatherInformation">
<http:operation location="/GetWeatherInformation"/>
<wsdl:input>
<mime:content type="application/x-www-form-urlencoded"/>
</wsdl:input>
<wsdl:output>
<mime:mimeXml part="Body"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityForecastByZIP">
<http:operation location="/GetCityForecastByZIP"/>
<wsdl:input>
<mime:content type="application/x-www-form-urlencoded"/>
</wsdl:input>
<wsdl:output>
<mime:mimeXml part="Body"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="GetCityWeatherByZIP">
<http:operation location="/GetCityWeatherByZIP"/>
<wsdl:input>
<mime:content type="application/x-www-form-urlencoded"/>
</wsdl:input>
<wsdl:output>
<mime:mimeXml part="Body"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="Weather">
<wsdl:port name="WeatherSoap" binding="tns:WeatherSoap">
<soap:address location="http://wsf.cdyne.com/WeatherWS/Weather.asmx"/>
</wsdl:port>
<wsdl:port name="WeatherSoap12" binding="tns:WeatherSoap12">
<soap12:address location="http://wsf.cdyne.com/WeatherWS/Weather.asmx"/>
</wsdl:port>
<wsdl:port name="WeatherHttpGet" binding="tns:WeatherHttpGet">
<http:address location="http://wsf.cdyne.com/WeatherWS/Weather.asmx"/>
</wsdl:port>
<wsdl:port name="WeatherHttpPost" binding="tns:WeatherHttpPost">
<http:address location="http://wsf.cdyne.com/WeatherWS/Weather.asmx"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>