php 登陆验证类功能实例

内容摘要
这篇文章主要为大家详细介绍了php 登陆验证类功能实例,具有一定的参考价值,可以用来参考一下。

php封装的用户登陆验证的类,实现了用户登陆的常用功能,包含cookie和session的设
文章正文

这篇文章主要为大家详细介绍了php 登陆验证类功能实例,具有一定的参考价值,可以用来参考一下。

php封装的用户登陆验证的类,实现了用户登陆的常用功能,包含cookie和session的设置,php用于登陆验证的类,对此感兴趣的朋友,看看idc笔记做的技术笔记。经测试代码如下:
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<code class="php">
/**
 * 用户登陆验证的类
 *
 * @param
 * @arrange (www.idcnote.com)
 **/
class Auth
{
 var $user_id;
 var $username;
 var $password;
 var $ok;
 var $salt = "34asdf34";
 var $domain = ".domain.com";
  
 function Auth()
 {
  global $db;
  
  $this->user_id = 0;
  $this->username = "Guest";
  $this->ok = false;
  
  if(!$this->check_session()) $this->check_cookie();
  
  return $this->ok;
 }
  
 function check_session()
 {
  if(!empty($_SESSION['auth_username']) && !empty($_SESSION['auth_password']))
   return $this->check($_SESSION['auth_username'], $_SESSION['auth_password']);
  else
   return false;
 }
  
 function check_cookie()
 {
  if(!empty($_COOKIE['auth_username']) && !empty($_COOKIE['auth_password']))
   return $this->check($_COOKIE['auth_username'], $_COOKIE['auth_password']);
  else
   return false;
 }
  
 function login($username, $password)
 {
  global $db;
  $db->query("SELECT user_id FROM users WHERE username = '$username' AND password = '$password'");
  if(mysql_num_rows($db->result) == 1)
  {
   $this->user_id = mysql_result($db->result, 0, 0);
   $this->username = $username;
   $this->ok = true;
  
   $_SESSION['auth_username'] = $username;
   $_SESSION['auth_password'] = md5($password . $this->salt);
   setcookie("auth_username", $username, time()+60*60*24*30, "/", $this->domain);
   setcookie("auth_password", md5($password . $this->salt), time()+60*60*24*30, "/", $this->domain);
  
   return true;
  }
  return false;
 
  
 function check($username, $password)
 {
  global $db;
  $db->query("SELECT user_id, password FROM users WHERE username = '$username'");
  if(mysql_num_rows($db->result) == 1)
  {
   $db_password = mysql_result($db->result, 0, 1);
   if(md5($db_password . $this->salt) == $password)
   {
    $this->user_id = mysql_result($db->result, 0, 0);
    $this->username = $username;
    $this->ok = true;
    return true;
   }
  }  
  return false;
 }
  
 function logout()
 {
  $this->user_id = 0;
  $this->username = "Guest";
  $this->ok = false;
  
  $_SESSION['auth_username'] = "";
  $_SESSION['auth_password'] = "";
  
  setcookie("auth_username", "", time() - 3600, "/", $this->domain);
  setcookie("auth_password", "", time() - 3600, "/", $this->domain);
 }
  
}
 
 
/***   来自php教程(www.idcnote.com)   ***/</code>

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代码注释

作者:喵哥笔记

IDC笔记

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