How to get the URL data?

I found the solution. I did it with javascript and actionscript

javascript :

<script language="JavaScript">
function recup_idtuto()
{
a=unescape(window.location.search.substr(1)).split("&");
return (a);
}
</script>

action script :

var str:String = ExternalInterface.call("recup_idtuto");

I then do some text operations on str in order to extract the ID that was in the URL parameters

try:

Compose the OBJECT tag with php add the parameters to the swf like (note: I dont know php)

....

"<PARAM NAME=movie VALUE='flaMovie.swf?id=".$_GET["id"]."'>"

........

and then in Flash:

trace(loaderInfo.parameters.id);

hi

do a search for flashvars