Need simple example for Web services

PHP
1

Hi all :),

Need ur help. Im very new to web-service concept.

Urgently i need the sample code in web-service. please that should be very simple to understand, bcoz im a beginner.

[B]I have to write a web-service code to know whether the given “string” from client is available on server database.

Get the “string” from client as input. Check it out in the server side database and send the reply(output) whether it is available or not.[/B]

The above should be done through web-service concept.

I need a very simple example code in web-service to fulfill the above criteria.

Please do the needful…
Thanks in advance,

Regards,
Vanash

2

hi,

you can have a look here

it’s a basic example of a client/server soap web service

hope this help

3

Hi LrtL,

Thanks for ur reply…

I tried the example that sent by u as a link.
I got the Fatal Error, as below

The original text : mississippi
Fatal error: Uncaught SoapFault exception: [HTTP] Unable to parse URL in C:\wamp\www\webservices
ewclient.php:10 Stack trace: #0 [internal function]: SoapClient->__doRequest(‘<?xml version="…’, ‘newserver.php’, ‘urn:localhost-s…’, 1, 0) #1 [internal function]: SoapClient->__call(‘getRot13’, Array) #2 C:\wamp\www\webservices
ewclient.php(10): SoapClient->getRot13(‘mississippi’) #3 {main} thrown in C:\wamp\www\webservices
ewclient.php on line 10

I tried some other examples i got same fatal error message.
I don’t know how to fix it.

Please help out…

Thanks and Regards,
Vanash

4

client.php

$client = new SoapClient(“stockquote.wsdl”);

try {
print($client->getQuote(“ibm”));
}

catch(SoapFault $e) {
print "<pre>Exception:
";
print "Request :
“.htmlspecialchars($client->__getQuoteRequest()) .”
";
print "Response:
“.htmlspecialchars($client->__getQuoteResponse()).”
";
print “</pre>”;
die($e);
}

server.php

$quotes = array(
“ibm” => 98.42
);

function getQuote($symbol) {
global $quotes;
return $quotes[$symbol];
}

ini_set(“soap.wsdl_cache_enabled”, “0”); // disabling WSDL cache
$server = new SoapServer(“stockquote.wsdl”);
$server->addFunction(“getQuote”);
$server->handle();

stockcode.wsdl

<?xml version =‘1.0’ encoding =‘UTF-8’ ?>
<definitions name=‘StockQuote’
targetNamespace=‘http://example.org/StockQuote’
xmlns:tns=’ http://example.org/StockQuote ’
xmlns:soap=‘http://schemas.xmlsoap.org/wsdl/soap/’
xmlns:xsd=‘http://www.w3.org/2001/XMLSchema’
xmlns:soapenc=‘http://schemas.xmlsoap.org/soap/encoding/’
xmlns:wsdl=‘http://schemas.xmlsoap.org/wsdl/’
xmlns=‘http://schemas.xmlsoap.org/wsdl/’>

<message name=‘getQuoteRequest’>
<part name=‘symbol’ type=‘xsd:string’/>
</message>
<message name=‘getQuoteResponse’>
<part name=‘Result’ type=‘xsd:float’/>
</message>

<portType name=‘StockQuotePortType’>
<operation name=‘getQuote’>
<input message=‘tns:getQuoteRequest’/>
<output message=‘tns:getQuoteResponse’/>
</operation>
</portType>

<binding name=‘StockQuoteBinding’ type=‘tns:StockQuotePortType’>
<soap:binding style=‘rpc’
transport=‘http://schemas.xmlsoap.org/soap/http’/>
<operation name=‘getQuote’>
<soap:operation soapAction=‘urn:xmethods-delayed-quotes#getQuote’/>
<input>
<soap:body use=‘encoded’ namespace=‘urn:xmethods-delayed-quotes’
encodingStyle=‘http://schemas.xmlsoap.org/soap/encoding/’/>
</input>
<output>
<soap:body use=‘encoded’ namespace=‘urn:xmethods-delayed-quotes’
encodingStyle=‘http://schemas.xmlsoap.org/soap/encoding/’/>
</output>
</operation>
</binding>

<service name=‘StockQuoteService’>
<port name=‘StockQuotePort’ binding=‘StockQuoteBinding’>
<soap:address location=‘http://localhost/webservices/server.php’/>
</port>
</service>
</definitions>

I tried the above example, I got the error, as below

Exception:


Fatal error: Uncaught SoapFault exception: [Client] Function (“__getQuoteRequest”) is not a valid method for this service in C:\wamp\www\webservices\client.php:13
Stack trace:
#0 [internal function]: SoapClient->__call(‘__getQuoteReque…’, Array)
#1 C:\wamp\www\webservices\client.php(13): SoapClient->__getQuoteRequest()
#2 {main}
thrown in C:\wamp\www\webservices\client.php on line 13

Please tell me how to fix this error?

Regards,
Vanash

5

Have you set the “?wsdl” appendix to the URL ?

Is the extension=php_soap.dll directive activated in the php.ini file ?

You can test nusoap instead perhaps ?

6

Hi LrtL,

Thanks for ur reply… I tried as per ur suggestions… but i got this error:

Fatal error: Call to undefined method nusoap_client::getQuote() in C:\wamp\www\webservices\client.php on line 9

Changes made in client.php

require_once(‘…/lib/nusoap.php’);
$client = new nusoap_client(“stockquote.wsdl?wsdl”);

Is that right?

Regards,
Ashok

7

Hi Vanash,

have you seen this thread ?

It seems to be the same problem …