Using URLVariables()

URLVariables Class allow you to send or receive data from an URL encoded feed (with the data property of the URLRequest class).
There is so two possible use:

1. Sending parameters to a server side script
2. Read parameters written from a server side script

The use is quite simple, let’s start by building the PHP file that will receive the variables from a POST method and echo them again with a list of parameters association by name and value: email=”..”&id=”..”&db=”…”.

< ?php
 $psPreRegEmail=$_POST['sEml'];
 $FRM_ID=$_POST['sID'];
 $psBD=$_POST['sBD'];

 echo "email=".$psPreRegEmail;
 echo "&id=".$FRM_ID;
 echo "&db=".$psBD;
?>

Now we need to prepare our AS3 script that will send this 3 variables to our PHP file:

var request:URLRequest = new URLRequest("http://www.server.com/varsTest.php");
var variables:URLVariables = new URLVariables();//create a variable container
variables.sEml = email;
variables.sID = theForum;
variables.sBD = theDB;
request.data = variables;//add the data to our containers
request.method = URLRequestMethod.POST;//select the method as post
var loader:URLLoader = new URLLoader();
loader.addEventListener(Event.COMPLETE, handleComplete);
loader.load(request);//send the request with URLLoader()

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Here we send the variables and wait for the Event.COMPLETE, it will indicates us that the php files is totally downloaded (and so all the scripts has been executed). Now we can prepare our HandleComplete function:

function handleComplete(event:Event)
{
var loader:URLLoader = URLLoader(event.target);
var vars:URLVariables = new URLVariables(loader.data);
//Access data from the PHP file
trace("vars.email: "+vars.email);
trace("vars.id: "+vars.id);
trace("vars.db: "+vars.db);
}

That’s all!

Ahmet