Transfer data from Flash AS 3 to PHP

[lukegatos]

I have coded a program to accept several text fields in Flash and then transfer
them (using a defined Class function, sendExample with sendPhp) and display
them with a pfp form. When I run the swf from my pc it transfers the data
correctly (the php file is on my hosted server.) However when I transfer the
swf to the server (along with the class I defined to do the transfer), the php
file is called but no data is transfered. What is missing from the server to
make the data transfer complete? No errors, just a php page with no data
inserted.

import flash.display.Sprite;
import flash.text.TextField;
import flash.events.*

import flash.net.*;
import flash.net.URLVariables;



var sendPhp:sendExample = new sendExample();



function sendToPhp(evt:MouseEvent):void {

var formUrl:String = "http://'mydomain'/message_form.php"

var formData:URLVariables = new URLVariables();

formData.message1= this.message1.text;
formData.message2= this.message2.text;
formData.message3= this.message3.text;
formData.message4= this.message4.text;
formData.message5= this.message5.text;

formData.remoteSystem = this.remoteSystem.selectedItem;


sendPhp.submitData(formUrl, formData);


}

submit_btn.addEventListener(MouseEvent.CLICK, sendToPhp, false, 0, true);

********************************************
//class definition sendExample

package {


import flash.display.MovieClip;
import flash.text.TextField;
import flash.events.*;

import flash.net.*;


public class sendExample extends MovieClip {

public function sendExample() {}

public function submitData(url:String, _vars:URLVariables):void {

var request:URLRequest = new URLRequest(url);



var loader:URLLoader = new URLLoader();
loader.dataFormat = URLLoaderDataFormat.VARIABLES;
request.data = _vars;

request.method = URLRequestMethod.POST;
loader.addEventListener(Event.COMPLETE, handleComplete);
loader.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
loader.load(request);
navigateToURL(request);
}

private function handleComplete(event:Event):void {
var loader:URLLoader = URLLoader(event.target);

trace("Par: " + loader.data.par);
trace("Message: " + loader.data.msg);
}

private function onIOError(event:IOErrorEvent):void {
trace("Error loading URL");
}



}

}

[lukegatos]

Another detail about the problem - the php page only works correctly when I run
the Flash movie using the Flash CS3 Application program (ctl + Enter). When I
just open the Flash movie using a browser, the php page is called but again no
data is transferred to the form.