[Fernando Costa]

Флеш

var sender:LoadVars = new LoadVars();
sender.mess = "sdfsdfgfgsfgd";
sender.file = "file.txt";
sender.send('script.php',"_blank", "POST");

ПХП

<?php
$file=fopen($_POST["file"],"a+");
if(isset($_POST["mess"])){
   $string=$_POST["mess"];
   fputs($file,$string);
}
fclose($file);
?>