Loading variable in flash 8 from PHP ...?

Hi everyone,

I’m new in scripting PHP with flash
I have a php file that echos one variable
and i want to load this variable in my flash site and not running the php as a new page
the code of the pcp is this
<?


if ($user == 1){
echo “<b>$user</b> User Online”;
}
else{
echo “<b>$user</b> Users Online”;
}
?>

how can i get this var into a dynamic text ???
i tried some ways i found on some webpages but nothing happen
if anyone can help it would be nice

Thanx