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Simple Web service - SOAP Server/Client in PHP

Simple Web service - SOAP Server/Client in PHP

Implementation of the SOAP server - server.php:

<?php
// turn off WSDL caching
ini_set("soap.wsdl_cache_enabled","0");

// model, which uses in web service functions as parameter
class Book
{
	public $name;
	public $year;
}

/**
 * Determines published year of the book by name.
 * @param Book $book book instance with name set.
 * @return int published year of the book or 0 if not found.
 */
function bookYear($book)
{
	// list of the books
	$_books=[
		['name'=>'test 1','year'=>2011],
		['name'=>'test 2','year'=>2012],
		['name'=>'test 3','year'=>2013],
	];
	// search book by name
	foreach($_books as $bk)
		if($bk['name']==$book->name)
			return $bk['year']; // book found

	return 0; // book not found
}

// initialize SOAP Server
$server=new SoapServer("test.wsdl",[
	'classmap'=>[
		'book'=>'Book', // 'book' complex type in WSDL file mapped to the Book PHP class
	]
]);

// register available functions
$server->addFunction('bookYear');

// start handling requests
$server->handle();

Implementation of the SOAP client - client.php:

<?php
// model
class Book
{
	public $name;
	public $year;
}

// create instance and set a book name
$book      =new Book();
$book->name='test 2';

// initialize SOAP client and call web service function
$client=new SoapClient('http://a.uz/soap/server.php?wsdl',['trace'=>1,'cache_wsdl'=>WSDL_CACHE_NONE]);
$resp  =$client->bookYear($book);

// dump response
var_dump($resp);

Dump of the response:

string '2012' (length=4)

WSDL file test.wsdl:

<?xml version="1.0" encoding="UTF-8"?>

<wsdl:definitions name="Library"
                  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                  targetNamespace="Library"
                  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
                  xmlns:tns="Library"
                  xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">

    <xsd:documentation></xsd:documentation>

    <wsdl:types>
        <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="Library">
            <xsd:complexType name="book">
                <xsd:sequence>
                    <xsd:element name="name" type="xsd:string"></xsd:element>
                    <xsd:element name="year" type="tns:integer"></xsd:element>
                </xsd:sequence>
            </xsd:complexType>
        </xsd:schema>
    </wsdl:types>

    <wsdl:message name="bookYearRequest">
        <wsdl:part name="book" type="xsd:book"></wsdl:part>
    </wsdl:message>
    <wsdl:message name="bookYearResponse">
        <wsdl:part name="year" type="tns:integer"></wsdl:part>
    </wsdl:message>

    <wsdl:portType name="Library">
        <wsdl:operation name="bookYear">
            <wsdl:input message="tns:bookYearRequest"/>
            <wsdl:output message="tns:bookYearResponse"/>
        </wsdl:operation>
    </wsdl:portType>

    <wsdl:binding name="Library" type="tns:Library">
        <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
        <wsdl:operation name="bookYear">
            <soap:operation soapAction="http://a.uz/soap/server.php"/>
            <wsdl:input>
                <soap:body use="literal" namespace="Library"/>
            </wsdl:input>
            <wsdl:output>
                <soap:body use="literal" namespace="Library"/>
            </wsdl:output>
        </wsdl:operation>
    </wsdl:binding>

    <wsdl:service name="Library">
        <wsdl:port binding="tns:Library" name="BookLibrary">
            <soap:address location="http://a.uz/soap/server.php"/>
        </wsdl:port>
    </wsdl:service>

</wsdl:definitions>
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