<Implementar e consumir um WebService ⁄ >

<?php
include_once ("nusoap.php");
$namespace = "http://localhost/webservice/";
 
$webservice = new soap_server();
$webservice->configureWSDL('MyWebService',$namespace); //configurar o objecto WSDL
$webservice->wsdl->schemaTargetNamespace = $namespace;
 
//registar um método
$webservice->register(
  'ws_StringReverse', //nome da função
  array('str'=>'xsd:string'), //o que recebe
  array('str_reversed'=>'xsd:string'), //o que devolve
  $namespace,
  "$namespace#ws_StringReverse",
  'rpc',
  'encoded',
  'Reverte uma string'//descrição
);
 
//registar outro método
$webservice->register(
  'ws_StringLength', //nome da função
  array('str' => 'xsd:string'), //o que recebe
  array('str_length' => 'xsd:int'), //o que devolve
  $namespace,
  "$namespace#ws_StringLength",
  'rpc',
  'encoded',
  'Obter o tamanho de uma string'//descrição
);
 
 
 
/**
 * Webservice que reverte uma string
 * 
 * nota: sim é básico e pointless, mas o objectivo era mesmo
 * mostrar um exemplo do webservice :)
 *
 * @param String $str
 * @return String
 */
function ws_StringReverse($str){
  $str_reversed=strrev($str);
  return new soapval('return','xsd:string',$str_reversed);
}
 
/**
 * Webservice que reverte uma string
 * 
 * nota: sim é outra função básica e pointless, mas o objectivo era mesmo
 * mostrar um exemplo do webservice :)
 *
 * @param String $str
 * @return String
 */
function ws_StringLength($str){
  $str_length=strlen($str);
  return new soapval('return','xsd:string',$str_length);
}
 
//processa o pedido e devolve a resposta
$webservice->service($HTTP_RAW_POST_DATA);
?>

<?xml version="1.0" encoding="ISO-8859-1"?>
<definitions xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" 
xmlns:tns="http://localhost/webservice/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" 
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns="http://schemas.xmlsoap.org/wsdl/" 
targetNamespace="http://localhost/webservice/">
 
  <types>
    <xsd:schema targetNamespace="http://localhost/webservice/">
     <xsd:import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
     <xsd:import namespace="http://schemas.xmlsoap.org/wsdl/"/>
    </xsd:schema>
  </types>
 
  <message name="ws_StringReverseRequest"><part name="str" type="xsd:string"/></message>
  <message name="ws_StringReverseResponse"><part name="str_reversed" type="xsd:string"/></message>
  <message name="ws_StringLengthRequest"><part name="str" type="xsd:string"/></message>
  <message name="ws_StringLengthResponse"><part name="str_length" type="xsd:int"/></message>
 
  <portType name="MyWebServicePortType">
    <operation name="ws_StringReverse">
      <documentation>Reverte uma string</documentation>
      <input message="tns:ws_StringReverseRequest"/>
      <output message="tns:ws_StringReverseResponse"/>
 
      </operation><operation name="ws_StringLength">
      <documentation>Obter o tamanho de uma string</documentation>
      <input message="tns:ws_StringLengthRequest"/>
      <output message="tns:ws_StringLengthResponse"/>
    </operation>
  </portType>
 
  <binding name="MyWebServiceBinding" type="tns:MyWebServicePortType">
    <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
    <operation name="ws_StringReverse">
      <soap:operation soapAction="http://localhost/webservice/#ws_StringReverse" style="rpc"/>
        <input>
          <soap:body use="encoded" namespace="http://localhost/webservice/" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
        </input>
 
        <output>
          <soap:body use="encoded" namespace="http://localhost/webservice/" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
        </output>
    </operation>
 
    <operation name="ws_StringLength">
      <soap:operation soapAction="http://localhost/webservice/#ws_StringLength" style="rpc"/>
      <input>
        <soap:body use="encoded" namespace="http://localhost/webservice/" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </input>
      <output>
        <soap:body use="encoded" namespace="http://localhost/webservice/" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </output>
    </operation>
  </binding>
 
  <service name="MyWebService">
    <port name="MyWebServicePort" binding="tns:MyWebServiceBinding">
      <soap:address location="http://localhost/webservice/WebService.php"/>
    </port>
  </service>
</definitions>

<?php
include_once ('nusoap.php');
$wsdl = "http://localhost/webservice/WebService.php?wsdl";
$str="Este é o meu WebService!";
 
//testar ws_StringReverse
$clientStringReverse = new soapclient($wsdl,'wsdl');
$param = array('str'=>$str);
echo "ws_ReverseString: $str <=> ".$clientStringReverse->call('ws_StringReverse',$param);
#vai imprimir: ws_ReverseString: Este é o meu WebService! <=> !ecivreSbeW uem o é etsE
 
echo "<hr>";
 
//testar ws_StringLength
$clientStringLength = new soapclient($wsdl,'wsdl');
$param = array('str'=>$str);
echo "ws_StringLength: $str <=> ".$clientStringLength->call('ws_StringLength',$param);
#vai imprimir: ws_StringLength: Este é o meu WebService! <=> 24
?>