ActionScript 3 - Passing data from php to flash error.

<?php
$username="user";
$password="password
$database="website";

mysql_connect(localhost,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");
$query="SELECT *
FROM `wp_posts`
WHERE `ID`
IN (

SELECT `object_id`
FROM `wp_term_relationships`
WHERE `term_taxonomy_id` =1
OR `term_taxonomy_id` =3
OR `term_taxonomy_id` =4
)
AND `post_status` = 'publish'
ORDER BY `wp_posts`.`post_date` DESC
LIMIT 5";
$result=mysql_query($query) or die( "Query error");

$num=mysql_numrows($result);

mysql_close();

//echo "<b><center>Database Output</center></b><br><br>";

$i=0;
while ($i < $num) {

$theID=mysql_result($result,$i,"ID");
$field1=mysql_result($result,$i,"post_author");
$field2=mysql_result($result,$i,"post_date");
$field3=mysql_result($result,$i,"post_title");
$field4=mysql_result($result,$i,"post_status");
$field5=mysql_result($result,$i,"post_type");

$theResult .= "result$i&$field3&$theID";
$i++;
}
print "results=$theResult";
?>

var loader:URLLoader = new URLLoader();
loader.dataFormat=URLLoaderDataFormat.VARIABLES;
loader.addEventListener(Event.COMPLETE, completeHandler);
var request:URLRequest = new URLRequest("test.php");
request.method=URLRequestMethod.POST;
var userID:uint;
var username:String;
function completeHandler(e:Event):void {
	var loader:URLLoader = URLLoader(e.target);
	var vars:URLVariables = new URLVariables(loader.data);
	Object(root).output_txt= vars.results;	
}

loader.load(request);

Error: Error #2101: The String passed to URLVariables.decode() must be a URL-encoded query string containing name/value pairs.
	at Error$/throwError()
	at flash.net::URLVariables/decode()
	at flash.net::URLVariables()
	at flash.net::URLLoader/onComplete()