$file="progi.dat";
if (file_exists($file))
{
$fa=fopen($file,"r");
$sor=fgets($fa,4096);
fclose($fa);
parse_str(urldecode($sor));
$username=base64_decode($username);
$password=base64_decode($password);
$host=base64_decode($host);
$database=base64_decode($database);
}