class autorizationAdmin extends connect_Db {
   private static $table = 'login';
   
   function enter($name, $pass) {
        $sql = "SELECT COUTN(*) FROM `".self::$table."`
                WHERE `name` = '".$name."'
                AND `encode` = '".$pass."'
                ";
        $true = $this->sql($sql);
        if(mysql_result($true, 0) != 0) {
            $ok = '<font color=red>Name or Pass is wrong. Please retry again.</font>';
        } else {
            setcookie("name", "$name", time()+3600, '/');
            setcookie("pass", "$pass", time()+3600, '/');
            header("Location: ./index.php");
        }
        return $ok;
   } 
}


$autorization = new autorizationAdmin;

    $name = !empty($_POST['name'])?trim($_POST['name']):'';
    $pass = !empty($_POST['pass'])?md5($_POST['pass']):'';
    $res = $autorization->enter($name, $pass);
    
    echo $res;    

class autorizationAdmin extends connect_Db {
   private static $table = 'login';
   

   
   function enter($name, $pass) {
        $sql = "SELECT COUNT(*) FROM `".self::$table."`
                WHERE `name` = '".$name."'
                AND `encode` = '".$pass."'
                ";
        if(mysql_result($this->sql($sql), 0) == 0) {
            $ok = '<font color="red">Name or Pass is wrong. Please retry again.</font>';
        } else {
            setcookie("name", "$name", time()+3600, '/');
            setcookie("pass", "$pass", time()+3600, '/');
            header("Location: ./index.php");
            $ok = 'Name and Pass is correct';
        }
        return $ok;
   } 
}


$autorization = new autorizationAdmin;

    $name = !empty($_POST['name'])?trim($_POST['name']):'';
    $pass = !empty($_POST['pass'])?md5($_POST['pass']):'';

 CheckLogin() // Проверка логина
 CheckPassw() // Проверка пароля
 SilcePassw() // Проверка пароля из БД и введенного пользователем. Наследует первые 2 проверка
 __construct($login, $passw) // Устанавливает глобальные свойства логина и пароля
 setCookie() // Устанавливаем куку
 isCookie() // А если существует кука?
 delCookie() // Тогда удалим её
 login() // Логинирует пользователя, использует все вышеперечисленные методы

<?php
class Auth
{
    public $form_name;
    public $form_pass;
    public $error;
    
    __construct($name, $pass)
    {
        $this->form_name = !empty($name) ? mysql_real_escape_string($name) : 'Guest';
        $this->form_pass = !empty($name) ? md5($pass) : null;
    }
    function Go()
    {
        $query = mysql_query("SELECT `encode` FROM `login` WHERE `name`='{$this->form_name}'");
        if(mysql_num_rows($query) > 0)
        {
            $row = mysql_fetch_assoc($query);
            if($row['encode'] == $this->form_pass)
            {
                $this->Cookie();
                return true;
            }
            else
            {
                $this->error = '<font color="red">Неправильный пароль</font><br/>';
            }
        }
        else
        {
            $this->error .= '<font color="red">Такого логина не существует</font><br/>';
            return false;
        }
    }
    private function Cookie()
    {
        setcookie('name', htmlspecialchars($this->form_name), time()+3600, '/');
        setcookie('pass', $this->form_pass, time()+3600, '/');
    }
}

$auth = new Auth($_POST['login'], $_POST['password']);
$auth->Go();
if(empty($auth->error)) header('Location: /index.php');
else echo $auth->error;
?>

  $query = mysql_query("SELECT `encode` FROM `login` WHERE `name`='{$this->form_name}'");
        if(mysql_num_rows($query) > 0)
        {
            $row = mysql_fetch_assoc($query);
            if($row['encode'] == $this->form_pass)
            {
                $this->Cookie();
                return true;
            }
            else
            {
                $this->error = '<font color="red">Неправильный пароль</font><br/>';
            }

$sql = "SELECT COUNT(*) FROM `".self::$table."`
                WHERE `name` = '".$name."'
                AND `encode` = '".$pass."'
                ";

<?php
class Auth
{
    public $form_name;
    public $form_pass;
    public $error;
    
    __construct($name, $pass)
    {
        $this->form_name = !empty($name) ? mysql_real_escape_string($name) : 'Guest';
        $this->form_pass = !empty($name) ? md5($pass) : null;
    }
    function Go()
    {
        $query = mysql_query("SELECT COUNT(*) FROM `".self::$table."`
                              WHERE `name` = '{$this->form_name}'
                              AND `encode` = '{$this->form_pass}'");
        if(mysql_num_rows($query) > 0)
        {
            $this->Cookie();
            return true;
        }
        else
        {
            $this->error = '<font color="red">Неправильный пароль</font><br/>';
            return false;
        }
    }
    private function Cookie()
    {
        setcookie('name', htmlspecialchars($this->form_name), time()+3600, '/');
        setcookie('pass', $this->form_pass, time()+3600, '/');
    }
}

$auth = new Auth($_POST['login'], $_POST['password']);
$auth->Go();
if(empty($auth->error)) header('Location: /index.php');
else echo $auth->error;
?>

class autorizationAdmin extends connect_Db {
    
   private static $table = 'login';
   public $name;
   public $pass;
   
   
   function __construct($name, $pass) {
        $this->name = !empty($name)?mysql_real_escape_string($name):'Guest';
        $this->pass = !empty($pass)?md5($pass):NULL;        
   }
   
   function check() {
    echo $this->pass;
       
   }      
   
   function enter() {
        $sql = "SELECT COUNT(*) FROM `".self::$table."`
                WHERE `name` = '".$this->name."'
                AND `encode` = '".$this->pass."'
                ";       
        if(mysql_result($this->sql($sql), 0) == 0) {
            $ok = '<font color="red">Name or Pass is wrong. Please retry again.</font>';
        } else {
            header("Location: ./index.php");
            $ok = 'Name and Pass is correct';
        }
        return $ok;
   } 
}

if(isset($_POST['send'])) {
    $autorization = new autorizationAdmin($_POST['name'], $_POST['pass']);
    $res = $autorization->enter();
    
    echo $res;   

}

   public $name;
   public $pass;

   private $name = '';
   private $pass = '';

   function check() {
    echo $this->pass;
       
   }   

class autorizationAdmin extends connect_Db {
    
   private static $table = 'login';
   private $name;
   private $pass;
   
   
   function __construct($name, $pass) {
        $this->name = !empty($name)?mysql_real_escape_string($name):'Guest';
        $this->pass = !empty($pass)?md5($pass):NULL;        
   } 
   
   function enter() {
        $sql = "SELECT COUNT(*) FROM `".self::$table."`
                WHERE `name` = '".$this->name."'
                AND `encode` = '".$this->pass."'
                ";       
        if(mysql_result(connect_Db::sql($sql), 0) == 0) {
            $ok = '<font color="red">Name or Pass is wrong. Please retry again.</font>';
        } else {
            $this->setCookie();
            header("Location: ./index.php");
        }
        return $ok;
   }
   
    function setCookie() {
        setcookie("name", $this->name, time()+3600, '/');
        setcookie("pass", $this->pass, time()+3600, '/');
    }
}

if(isset($_POST['send'])) {
    $autorization = new autorizationAdmin($_POST['name'], $_POST['pass']);
    $res = $autorization->enter();
    echo $res;     
}

    function delCookie() {
        setcookie("name", "", time() - 60, '/');
        setcookie("pass", "", time() - 60, '/');           
    }

md5('qwerty'.'sol1');

delCookie

checkCookie

<?php
if(!isset($_COOKIE['name'])){
        header('location: ./index.php?page=log');
        die;
    } else {
        if($_COOKIE['name'] != 'admin' && $_COOKIE['pass'] != md5('pass'));
        header('location: ./index.php?page=log');
        die;
    }
?>

Hellow wold

private function isCookie() {

   $info = array();

   if (isset($_COOKIE)) {
      $info[] = isset($_COOKIE['login']) ? $_COOKIE['login'] : null; // Если есть логин  - заносим, иначе - нул
      $info[] = isset($_COOKIE['passw']) ? $_COOKIE['passw'] : null; // Если есть пароль - заносим, иначе - нул

   } else {
      return false;
   }

   return (in_array('null', $info)) ? false : true;  // Если есть нул, значит, либо пользователь не авторизован
							// и надо авторизовать, или чего-то не хватает в куках
							// иначе, пользователь авторизован.
}

private function delCookie() {
    if ($this->isCookie()) {
      unset($_COOKIE['login']);
      unset($_COOKIE['passw']);

      header('Location: index.php?inowexit');
    } else {
      // Нет нифига в куках

     $this->auth($this->login, $this->passw);

    }
    
}

if($_COOKIE['name'] != 'admin' && $_COOKIE['pass'] != md5('pass'));
        header('location: ./index.php?page=log');
        die;

SELECT `id` FROM `users` WHERE `login`=$login AND `passw`=$passw LIMIT 1;

    function emptyCookie() {
     $info = array();
     if(isset($_COOKIE)) {
        $info['name'] = isset($_COOKIE['name'])?$_COOKIE['name']:NULL;
        $info['pass'] = isset($_COOKIE['pass'])?$_COOKIE['pass']:NULL;
     }
         if($info['name'] != 'admin' || $info['pass'] != md5('oracle')) {
             return header("Location: ./index.php?page=log");  
         }
    }