In the below example we will use Actionscript 2 to call a remote PHP file that will return data to it.
It is a simple way of transferring data between the server and client.

Actionscript 2 Code:

callRemoteFile = function(ourVariable:String) {
        var result_lv:LoadVars = new LoadVars();
    result_lv.onLoad = function(success:Boolean) {
                if (success) {
                        if (result_lv.message=="success")
                                trace("done! "+result_lv.returnValue);
                        else
                                trace(result_lv.message);
                } else {
                        trace("Error connecting to server");
                        return false;
                }
    };
    var send_lv:LoadVars = new LoadVars();
    send_lv.ourVariable = ourVariable;
    send_lv.sendAndLoad("http://www.andrewodendaal.com/example/file.php", result_lv, "POST");
}
callRemoteFile("some text here");

PHP Code:

<?php
        if (isset($_POST)) echo "a=1&message=success&returnValue=".$_POST["ourVariable"]."&b=2";
        else echo "a=0&message=failed&returnValue=nothing&b=1";
?>