On 31 March 2010 13:54, lmhelp2 <lea.massiot@ign.fr> wrote:
>
> Hi everyone,
>
> I am an absolute beginner with SOAP :-( :-).
> I have been trying to follow a tutorial
> but I got stuck with "things" not working...
>
> (Maybe the following example is not the simplest
> (I whish I had found a little "Hello World", but I didn't).
> Notice that I wasn't especially willing to use "nusoap"
> but it is what I found first. I discovered later I could
> have used the SOAP extension for PHP...
> but as I said I know nothing about that).
>
>
>
> 1) Database:
> ~~~~~~~~~~~
> So, in that example, I first created a database:
> =================================================
> CREATE DATABASE soap_tutorial;
>
> CREATE TABLE stockprices
> (
> stock_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
> stock_symbol CHAR(3) NOT NULL,
> stock_price DECIMAL(8,2) NOT NULL,
> PRIMARY KEY(stock_id)
> );
>
> INSERT INTO stockprices VALUES (1, 'ABC', '75.00');
> INSERT INTO stockprices VALUES (2, 'DEF', '45.00');
> INSERT INTO stockprices VALUES (3, 'GHI', '12.00');
> INSERT INTO stockprices VALUES (4, 'JKL', '34.00');
> ==================================================
>
>
> 2) Server code:
> ~~~~~~~~~~~
> it is supposed to connect to the above database and
> return the "stock_price" of the tuple in which "stock_symbol"
> is equal to the value of the getStockQuote() function
> parameter: "$symbol". This value comes from the client
> side...
> ==================================================
> soap_tutorial_server.php
> ==================================================
> <?php
> function getStockQuote($symbol)
> {
> $retval = 0;
>
> //----------------------------------------------------------------
> $retval = mysql_connect("localhost", "user", "password");
> if(!$retval)
> {
> echo "<br />";
> echo "Database connection error";
> echo "<br />";
> return $retval;
> }
> //----------------------------------------------------------------
> $retval = mysql_select_db("soap_tutorial");
> if(!$retval)
> {
> echo "<br />";
> echo "Database not found";
> echo "<br />";
> return $retval;
> }
> //----------------------------------------------------------------
> $query = "SELECT stock_price FROM stockprices "
> . "WHERE stock_symbol = '" . $symbol . "'";
>
> $result = mysql_query($query);
> if(!$result)
> {
> echo "<br />";
> echo "Query error";
> echo "<br />";
> return $result;
> }
> //----------------------------------------------------------------
> $row = mysql_fetch_assoc($result);
>
> echo "<br />";
> echo "stock_price = " . $row["stock_price"];
> echo "<br />";
>
> return $stock_price;
> }
>
> //=======================================
> // Turn this function into a web service
> //=======================================
> //---------------------------------------------------------------
> // Include the NuSOAP library
> //---------------------------------------------------------------
> require("nusoap-0.7.3/lib/nusoap.php");
>
> //---------------------------------------------------------------
> // Instantiate an instance of the soap_server class
> //---------------------------------------------------------------
> $server = new soap_server();
>
> //---------------------------------------------------------------
> // Tell NuSOAP information for the WSDL document it is going to
> // create for us. Specifically we specify the name of the server
> // and the namespace, in that order.
> //---------------------------------------------------------------
> $server->configureWSDL("stockserver", "urn:stockquote");
>
> //---------------------------------------------------------------
> // Register the function we created with the SOAP server.
> // We pass several different parameters to the register method.
> //
> // The first is the name of the function we are registering.
> //
> // The next parameter specifies the input parameters to the
> // function we are registering. Notice that it is an array.
> // The keys of the array represent the names of the input
> // parameters, while the value specifies the type of the
> // input parameter. One thing that pure PHP programmers might
> // find odd is that I had to specify what types my input and
> // return parameters are with the designations of xsd:string
> // and xsd:decimal. It is required that you describe your data
> // properly. You are not dealing with a loosely typed language
> // here.
> //
> // The third parameter to the register method specifies the
> // return type of the registered function. As shown below, it
> // is fashioned in the same way as the last parameter, as an
> // array.
> //
> // The next two parameters specify the namespace we are
> // operating in, and the SOAPAction.
> //---------------------------------------------------------------
> $server->register("getStockQuote",
> array("symbol" => "xsd:string"),
> array("return" => "xsd:decimal"),
> "urn:stockquote",
> "urn:stockquote#getStockQuote");
>
> //---------------------------------------------------------------
> // Now, we finally finish it off with two more lines of code.
> // The first simply checks if $HTTP_RAW_POST_DATA is initialized.
> // If it is not, it initializes it with an empty string.
> //
> // The next line actually calls the service. The web request is
> // passed to the service from the $HTTP_RAW_POST_DATA variable
> // and all the magic behind the scenes takes place.
> //---------------------------------------------------------------
> $HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA)
> ? $HTTP_RAW_POST_DATA : "";
>
> $server->service($HTTP_RAW_POST_DATA);
> ?>
> ==================================================
>
> => :confused: I understand
> why the code inside the function is executed
> because there is a function call in the client but I do not
> understand when the rest of the code (outside the function)
> is executed...
> => :confused: Will I see server errors
> (for example if the database connection fails)?
>
> 3) Client side code
> ~~~~~~~~~~~~~~~~~
>
> ==================================================
> soap_tutorial_client.php
> ==================================================
> <?php
> //---------------------------------------------------------------
> // Include the NuSOAP library
> //---------------------------------------------------------------
> require("nusoap-0.7.3/lib/nusoap.php");
>
> //---------------------------------------------------------------
> // Instantiate the soapclient class.
> // We pass in the URL of the SOAP Server we are dealing with.
> //---------------------------------------------------------------
> $c = new soapClient("soap_tutorial_server.wsdl");
>
> //---------------------------------------------------------------
> // Last make a call to the Web Service.
> // The one caveat is that the parameters to the Web Service must
> // be encapsulated in an array in which the keys are the names
> // defined for the service. You will see that I have an array
> // key named 'symbol' because that is the name of the input
> // parameter of my function. If you remember how we specified
> // the input parameters when we registered the function with the
> // server, you will see that this is very similar.
> //---------------------------------------------------------------
> $stockprice = $c->call("getStockQuote", array("symbol" => "ABC"));
>
> //---------------------------------------------------------------
> // Output the result
> //---------------------------------------------------------------
> echo "<br />";
> echo "The stock price for \"ABC\" is " . $stockprice . ".";
> echo "<br />";
>
> //---------------------------------------------------------------
> // Kill object
> //---------------------------------------------------------------
> unset($c);
> ?>
> ==================================================
>
> 4) I put those two files ("soap_tutorial_server.php" and
> "soap_tutorial_client.php") in my "htdocs" directory.
>
> 5) When I open "soap_tutorial_server.php" in my browser, I get a page which
> contents are:
>
> ===================================================
> stockserver
>
> View the WSDL for the service. Click on an operation name to view
> it's details.
>
> * getStockQuote
> ===================================================
>
> I can click on the word "WSDL" and I get the following URI :
> http://localhost/soap_tutorial_server.php?wsdl
> In the browser appears an XML file.
>
> => :confused: Should I do something with it?
> (Save it somewhere?)
> => :confused: Can you explain me the syntax "soap_tutorial_server.php?wsdl"?
>
> 6) When I open "soap_tutorial_client.php", I get the following content:
> ====================================================
> The stock price for "ABC" is .
> ====================================================
>
> As you can see, the "stock_price" is missing.
>
> I have tried to find a simple tutorial about SOAP but I haven't had
> the chance to find something simple...
>
> I know there is a lot to read above... but I would be very grateful if
> you could give me a little help :-) !
>
> Thanks and best regards :-),
> --
> Lmhelp
> --
> View this message in context: http://old.nabble.com/PHP-SOAP---Extreme-newbie-questions-%3A--tp28095423p28095423.html
> Sent from the Php - Soap mailing list archive at Nabble.com.
>
>
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>
>
What you are missing is the response from the server.
Can you show the wsdl file please? I don't know nusoap as it is PHP4
only I believe.
But at a guess, can you try this URL ...
http://localhost/soap_tutorial_server.php#getStockQuote?symbol=ABC
The WSDL file describes the web service. With that file, any SOAP
client (in any language/os/etc.) can talk to the server.
I use Zend Framework's Soap service to read my PHP classes and
construct the WSDL file.
I then use a tool to read a WSDL file and create client PHP code.
That way I can test the WSDL file is accurate.
--
-----
Richard Quadling
"Standing on the shoulders of some very clever giants!"
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