<?php

    if (!isset($_SERVER['PHP_AUTH_USER']))

{
        Header ("WWW-Authenticate: Basic realm=\"Enter Login/Password\"");
        Header ("HTTP/1.0 401 Unauthorized");
        exit();
}

else {
        if (!get_magic_quotes_gpc()) {
                $_SERVER['PHP_AUTH_USER'] = mysql_escape_string($_SERVER['PHP_AUTH_USER']);
                $_SERVER['PHP_AUTH_PW'] = mysql_escape_string($_SERVER['PHP_AUTH_PW']);
        }
        
        @$p = $_SERVER['PHP_AUTH_USER'];
        $lst = mysql_query("SELECT password FROM users WHERE username='$p' and is_moder='1'") or die(mysql_error());

        if (!$lst)
        {
            Header ("WWW-Authenticate: Basic realm=\"Введите Логин и Пароль\"");
        Header ("HTTP/1.0 401 Unauthorized");
        exit();
        }

        if (mysql_num_rows($lst) == 0)
        {
           Header ("WWW-Authenticate: Basic realm=\"Введите Логин и Пароль\"");
           Header ("HTTP/1.0 401 Unauthorized");
           exit();
        }

        $pass = @mysql_fetch_array($lst);
        if ($_SERVER['PHP_AUTH_PW']!= $pass['password'])
        {
            Header ("WWW-Authenticate: Basic realm=\"Введите Логин и Пароль\"");
           Header ("HTTP/1.0 401 Unauthorized");
           exit();
        }


}

?>

@$p = $_SERVER['PHP_AUTH_USER'];