[AS3/PHP] Flash Contact Form

package 
{
	import flash.net.URLLoader;
	import flash.net.URLRequest;
	import flash.net.URLVariables;
	import XMLManager
	import flash.display.MovieClip;
	import flash.events.MouseEvent;
	import flash.events.Event;
	import fl.data.DataProvider;
	import flash.net.URLLoaderDataFormat;
	import flash.net.URLRequestMethod;
	
	public class Contact extends MovieClip
	{
		private var manager:XMLManager;
		private var xmlData:XML;
		private var phpReq:URLRequest;
		private var ldr:URLLoader;
		private var variables:URLVariables;
		
		public function Contact():void
		{
			if (stage)
			{
				init();
			}
			else {
				addEventListener(Event.ADDED_TO_STAGE, init);
			}
		}
		
		private function init():void
		{
			populateCounList();
			initVariables();
		}
		
		private function initVariables():void
		{
			phpReq = new URLRequest("contact.php");
			ldr = new URLLoader();
			variables = new URLVariables();
			ldr.dataFormat = URLLoaderDataFormat.VARIABLES;
			phpReq.method = URLRequestMethod.POST;
			
			name_txt.tabIndex = 0;
			email_txt.tabIndex = 1;
			phone_txt.tabIndex = 2;
			countryList.tabIndex = 3;
			msg_txt.tabIndex = 4;
			status.tabIndex = 5;
			reset.tabIndex = 6;
			submit.addEventListener(MouseEvent.CLICK, submitClicked);
			reset.addEventListener(MouseEvent.CLICK, resetClicked);
		}
		
		private function populateCounList():void
		{
			manager = new XMLManager("countries.xml");
			manager.addEventListener(Event.COMPLETE, dataReady);
		}
			
		private function dataReady(e:Event):void
		{
			var m:XMLManager = e.target as XMLManager;
			xmlData = m.data;
			var dp:DataProvider = new DataProvider();
			var list:XMLList = new XMLList(xmlData.country);
			for (var i:uint = 0; i < list.length(); i++)
			{
				dp.addItem( { label: list[i] } );
			}
			countryList.dataProvider = dp;
		}
		
		private function submitClicked(e:MouseEvent):void
		{	
			var phone:String;
			var country:String;
			
			if (name_txt.text.length <= 0)
			{
				status.text = "** Name Required **";
			}
			else if (!isValidEmail(email_txt.text))
			{
				status.text = "** Email Missing/Invalid Email **";
			}
			else if (msg_txt.text.length <= 0)
			{
				status.text = "** Message Required **";
			}
			else 
			{	
				if (phone_txt.text.length > 0)
				{
					phone = phone_txt.text;
				} else {
					phone = "No Phone";
				}
				if (countryList.selectedIndex != 0)
				{
					country = countryList.selectedLabel
				} else {
					country = "No Location";
				}
				
				variables.senderName = name_txt.text;
				variables.senderEmail = email_txt.text;
				variables.senderPhone = phone;
				variables.senderCountry = country;
				variables.senderMessage = msg_txt.text;
				phpReq.data = variables;
				ldr.load(phpReq);
				ldr.addEventListener(Event.COMPLETE, receiveData);
				status.text = "Processing, please wait...";
			}
		}
		
		private function receiveData(e:Event):void
		{
			if (e.target.data.returnMsg == 1)
			{
				status.text = "Message Sent Successfully";
				name_txt.text = "";
				email_txt.text = "";
				msg_txt.text = "";
				phone_txt.text = "";
				countryList.selectedIndex = 0;
			}
			else {
				status.text = "There was a problem, please try again";
			}
		}
			
		private function resetClicked(e:MouseEvent):void
		{
			name_txt.text = "";
			email_txt.text = "";
			msg_txt.text = "";
			phone_txt.text = "";
			countryList.selectedIndex = 0;
			status.text = "";
		}
			
		private function isValidEmail(email:String):Boolean 
		{
			var emailExpression:RegExp = /^[a-z][\w.-]+@\w[\w.-]+\.[\w.-]*[a-z][a-z]$/i;
			return emailExpression.test(email);
		}
	}
}

<?php

if(empty($_POST['senderEmail']))
{
	echo "Email is missing";
	exit;	
} 

$name = $_POST['senderName'];
$email = $_POST['senderEmail'];
$country = $_POST['senderCountry'];
$phone = $_POST['senderPhone'];
$msg = nl2br($POST['senderMessage']);
$sitename = "www.prodouble-d.com";

$to = "contact@prodouble-d.com";
$date = date("m/d/Y H:i:s");
$subject = "Email From $name via $sitename";
$emailBody = "A visitor to $sitename has left the following information<br />
Sent By: $name <br />
Email: $email <br />
Phone: $phone <br />
<br /><br />
Message Sent:
<br />$msg<br /><br />";  
$emailFooter	= "<br />Sent On: $date<br />Location:$country<br />";
$message = $emailBody.$emailFooter;
$headers  = "MIME-Version: 1.0\r\n"; 
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";
$headers .= "From:$name <".$email.">";

$ok = mail($to, $subject, $message, $headers);

if($ok){
	echo "returnMsg=1";
}else{
	echo "returnMsg=0";
}

?>