php auth user ponavlja

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Prvi put kad pita i kad kucam user:pass on mi opet trazi da ukucam username i password i ja opet kucam user:pass i tek onda prihvati ?!
Ko me nije razumeo neka proba kod
<? session_start(); if(isset($_GET["logout"])) {    unset($_SESSION["user"]);    unset($_SESSION["user_token"]);    echo "uspesno!";    die; } if(!isset($_SESSION["user_token"])){    $GETusername = $_SERVER["PHP_AUTH_USER"];    $GETpassword = $_SERVER["PHP_AUTH_PW"];    $logins = array(       'user' => 'pass',       'user2' => 'pass2',       'user3' => 'pass3'    );    $user = isset($GETusername) ? strtolower($GETusername) : '';    $pass = isset($GETpassword) ? $GETpassword : '';    $config["admin_username"] = $user;    $config["admin_passowrd"] = $pass;    header("WWW-Authenticate: Basic realm=\"Login\"");    if (!isset($logins[$user]) or $logins[$user] != $pass)    {       ?>       korisnicko ime/sifra greska       <?       die;    }    $_SESSION["user"] = $config["admin_username"];    $_SESSION["user_token"] = "auth-".md5($config["admin_username"]).md5($config["admin_passowrd"]);    die; } echo "username: ".$_SESSION["user"]."<br /><a href='?logout'>logout</a>"; ?>