Locating and calling services from a script which is not an SCA Component
Deploying an SCA component
Ejemplos
PHP Manual

## Exposing a Service Component as a Web service

SCA for PHP can generate WSDL from the annotations within a service component, so that it can be easily deployed and exposed as a Web service. To provide SCA with the information it needs to generate the WSDL, it is necessary to add the annotation @binding.soap under the @service annotation and to specify the parameters and return values of the methods using the @param and @return annotations. These annotations will be read when WSDL is generated, and the order and types of the parameters determine the contents of the <schema> section of the WSDL.

SCA for PHP always generates document/literal wrapped WSDL for components that are exposing a Web service. Note that this does not stop components from consuming Web services which are not SCA components and which are documented with WSDL written in a different style.

The scalar types which can be used in the @param annotation are the four common PHP scalar types: boolean, integer, float and string. These are simply mapped to the XML schema types of the same name in the WSDL. The example below, which is a trivial implementation of the StockQuote service that the ConvertedStockQuote component calls, illustrates string and float types.

Example #1 StockQuote Service

`<?php
include "SCA/SCA.php";
/**
* Scaffold implementation for a remote StockQuote Web service.
*
* @service
* @binding.soap
*
*/
class StockQuote {
/**
* Get a stock quote for a given ticker symbol.
*
* @param string $ticker The ticker symbol.
* @return float The stock quote.
*/
function getQuote($ticker) {
return 80.9;
}
}
?>`

WSDL much like the following (though with a service location other than 'localhost', probably) would be generated from this service:

Example #2 Generated WSDL

    <?xml version="1.0" encoding="UTF-8"?>
    <definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xsi:type="tDefinitions"
        xmlns:tns2="http://StockQuote" xmlns:tns="http://schemas.xmlsoap.org/wsdl/"
        xmlns:tns3="http://schemas.xmlsoap.org/wsdl/soap/"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" targetNamespace="http://StockQuote">
      <types>
        <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
          targetNamespace="http://StockQuote">
          <xs:element name="getQuote">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="ticker" type="xs:string"/>
              </xs:sequence>
            </xs:complexType>
          </xs:element>
          <xs:element name="getQuoteResponse">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="getQuoteReturn" type="xs:float"/>
              </xs:sequence>
            </xs:complexType>
          </xs:element>
        </xs:schema>
      </types>

      <message name="getQuoteRequest">
        <part name="getQuoteRequest" element="tns2:getQuote"/>
      </message>
      <message name="getQuoteResponse">
        <part name="return" element="tns2:getQuoteResponse"/>
      </message>
      <portType name="StockQuotePortType">
        <operation name="getQuote">
          <input message="tns2:getQuoteRequest"/>
          <output message="tns2:getQuoteResponse"/>
        </operation>
      </portType>
      <binding name="StockQuoteBinding" type="tns2:StockQuotePortType">
        <operation name="getQuote">
          <input>
            <tns3:body xsi:type="tBody" use="literal"/>
          </input>
          <output>
            <tns3:body xsi:type="tBody" use="literal"/>
          </output>
          <tns3:operation xsi:type="tOperation" soapAction=""/>
        </operation>
        <tns3:binding xsi:type="tBinding" transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
      </binding>
      <service name="StockQuoteService">
        <port name="StockQuotePort" binding="tns2:StockQuoteBinding">
          <tns3:address xsi:type="tAddress" location="http://localhost/StockQuote/StockQuote.php"/>
        </port>
      </service>
    </definitions>

    <!-- this line identifies this file as WSDL generated by SCA for PHP. Do not remove -->

Locating and calling services from a script which is not an SCA Component
Deploying an SCA component
Ejemplos
PHP Manual