<?php

 $pseudo = $_COOKIE['pseudo'];
$pass = $_COOKIE['pass'];
$result = mysql_query("SELECT * FROM admin_membres WHERE pseudo = '".$pseudo."'");
$userdata[0] = mysql_fetch_object($result);
$username = $userdata[0]->pseudo;
$password = $userdata[0]->pass;
if ($pseudo == $username && $pass == $password)
{
    // alles klar, user genehmigt
    echo 'alles klar, user genehmigt';
}
else
{
    //weiterleiten auf login.php
    header("location: index.php");
}

 ?>