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Example of php using cookie login authentication

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Release： 2016-07-25 09:05:16
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  4. Login
  21. 用户名：
    密码：
    Cookie保存时间：

复制代码

2、登录检测页 login.php

  2. @mysql_connect("localhost", "root","1981427") //选择数据库之前需要先连接数据库服务器
  3. or die("数据库服务器连接失败");
  4. @mysql_select_db("test") //选择数据库mydb
  5. or die("数据库不存在或不可用");
  6. //获取用户输入
  7. $username = $_POST['username'];
  8. $passcode = $_POST['passcode'];
  9. $cookie = $_POST['cookie'];
  10. //执行SQL语句
  11. $query = @mysql_query("select username, userflag from users "
  12. ."where username = '$username' and passcode = '$passcode'")
  13. or die("SQL语句执行失败");
  14. //判断用户是否存在，密码是否正确
  15. if($row = mysql_fetch_array($query))
  16. {
  17. if($row['userflag'] == 1 or $row['userflag'] == 0) //判断用户权限信息是否有效
  18. {
  19. switch($cookie) //根据用户的选择设置cookie保存时间
  20. {
  21. case 0: //保存Cookie为浏览器进程
  22. setcookie("username", $row['username']);
  23. break;
  24. case 1: //保存1天
  25. setcookie("username", $row['username'], time()+24*60*60);
  26. break;
  27. case 2: //保存30天
  28. setcookie("username", $row['username'], time()+30*24*60*60);
  29. break;
  30. case 3: //保存365天
  31. setcookie("username", $row['username'], time()+365*24*60*60);
  32. break;
  33. }
  34. header("location: main.php"); //自动跳转到main.php
  35. }
  36. else
  37. {
  38. echo "用户权限信息不正确";
  39. }
  40. }
  41. else
  42. {
  43. echo "用户名或密码错误";
  44. }
  45. ?>
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3. Login successful verification page

  2. session_start();
  3. if(isset($_COOKIE['username']))
  4. {
  5. @mysql_connect("localhost", "root","1981427") //Select You need to connect to the database server before the database
  6. or die("Database server connection failed");
  7. @mysql_select_db("test") //Select the database mydb
  8. or die("The database does not exist or is unavailable");
  9. //Get Session
  10. $username = $_COOKIE['username'];
  11. //Execute the SQL statement to obtain the value of userflag
  12. $query = @mysql_query("select userflag from users "
  13. ."where username = '$username'")
  14. or die("SQL statement execution failed");
  15. $row = mysql_fetch_array($query);
  16. //Obtain user permission information
  17. $flag = $row['userflag'];
  18. //Output different welcomes based on the value of userflag Information
  19. if($flag == 1)
  20. echo "Welcome administrator".$_SESSION['username']."Log in to the system";
  21. if($flag == 0)
  22. echo "Welcome user".$_SESSION[ 'username']."Log in to the system";
  23. echo "Logout";
  24. }
  25. else
  26. {
  27. echo "You You do not have permission to access this page";
  28. }
  29. ?>
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4. Log out and log in

  2. setcookie("username");
  3. echo "Logout successful";
  4. ?>
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Related labels：
php使用 cookie 登录验证的例子
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