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Posted on 2011-09-12
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How do you go about making a WSDL?  Also, I am new to this,what parts are normally added to create this?
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Question by:Jack_son_
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Ray Paseur earned 2000 total points
ID: 36528968
Smart programmers do not want a WSDL.  They want something that is easy to program, debug and use.  For that, they turn to RESTful interfaces.  The internet is littered with the rotting husks of failed WSDL and SOAP applications, but I have never seen anyone who could not understand a REST interface immediately upon seeing it.

You can learn more than you ever need to know about REST here.
http://en.wikipedia.org/wiki/Representational_state_transfer

You can learn exactly what you need to know from the simple little teaching example in the code snippet.  In a RESTful interface every request is atomic and complete and every response is complete.  Neither the client nor the server need to know any "stateful" information about the other, so REST is called a stateless protocol.

REST services can be secure.  Just put the service behind HTTPS.

You can see how easy it is to test a RESTful service by tinkering with the URL arguments.  Try it on my server here:
http://www.laprbass.com/RAY_REST_get_last_name.php?key=ABC&name=Ray

HTH, ~Ray


<?php // RAY_REST_get_last_name.php
error_reporting(E_ALL);



// DEMONSTRATE HOW A RESTFUL WEB SERVICE WORKS
// INPUT FIRST NAME, OUTPUT FAMILY NAME
// CALLING EXAMPLE:
// file_get_contents('http://laprbass.com/RAY_REST_get_last_name.php?key=ABC&resp=XML&name=Ray');



// OUR DATA MODEL CONTAINS ALL THE ANSWERS - THIS COULD BE A DATA BASE - AS SIMPLE OR COMPLEX AS NEEDED
$dataModel
= array
( 'Brian'   => 'Portlock'
, 'Ray'     => 'Paseur'
, 'Richard' => 'Quadling'
, 'Dave'    => 'Baldwin'
)
;


// RESPONSE CAN BE PLAIN TEXT OR XML FORMAT
$alpha = NULL;
$omega = NULL;
if ( (isset($_GET["resp"])) && ($_GET["resp"] == 'XML') )
{
    // PREPARE THE XML WRAPPER
    $alpha = '<response>';
    $omega = '</response>';
}



// TEST THE 'API KEY' - THIS COULD BE A DATA BASE VALIDATION LOOKUP - AS SIMPLE OR COMPLEX AS NEEDED
$key = (!empty($_GET["key"])) ? $_GET["key"] : FALSE;
if ($key !== 'ABC')
{
    echo $alpha . 'BOGUS API KEY' . $omega;
    die();
}



// LOOK UP THE FAMILY NAME
$name = (!empty($_GET["name"])) ? $_GET["name"] : 'UNKNOWN';

// IF THE NAME FROM THE URL IS FOUND IN THE DATA MODEL
if (array_key_exists($name, $dataModel))
{
    // RETURNS THE APPROPRIATE FAMILY NAME FROM THE DATA MODEL
    echo $alpha . $dataModel[$name] . $omega;
    die();
}

// RETURNS THE UNKNOWN NAME INDICATOR
else
{
    echo $alpha . 'UNKNOWN' . $omega;
    die();
}

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