php cookie login verification code_PHP tutorial

Provide an automatic cookie login method. Users can choose to save the process for several days and months when logging in. We only need to judge when entering the page and it will be KO.

The code is as follows

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 代码如下

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用户名：
密码：
Cookie保存时间：	浏览器进程         保存1天         保存30天         保存365天

   
   

​                                                                                                                        


        
                                                                             

                                                                                               

Password:

& Lt; option value = "0" selectd & gt; browser process & lt; /option & gt;
            Save for 1 day
           Save for 30 days
            Save for 365 days

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The code is as follows

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代码如下

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@mysql_connect("localhost", "root","1981427") //选择数据库之前需要先连接数据库服务器 or die("数据库服务器连接失败"); @mysql_select_db("test") //选择数据库mydb or die("数据库不存在或不可用"); //获取用户输入 $username = $_POST['username']; $passcode = $_POST['passcode']; $cookie = $_POST['cookie']; //执行SQL语句 $query = @mysql_query("select username, userflag from users " ."where username = '$username' and passcode = '$passcode'") or die("SQL语句执行失败"); //判断用户是否存在，密码是否正确 if($row = mysql_fetch_array($query)) { if($row['userflag'] == 1 or $row['userflag'] == 0) //判断用户权限信息是否有效 { switch($cookie) //根据用户的选择设置cookie保存时间 { case 0: //保存Cookie为浏览器进程 setcookie("username", $row['username']); break; case 1: //保存1天 setcookie("username", $row['username'], time()+24*60*60); break; case 2: //保存30天 setcookie("username", $row['username'], time()+30*24*60*60); break; case 3: //保存365天 setcookie("username", $row['username'], time()+365*24*60*60); break; } header("location: main.php"); //自动跳转到main.php } else { echo "用户权限信息不正确"; } } else { echo "用户名或密码错误"; } ?>

@mysql_connect("localhost", "root","1981427") //You need to connect to the database server before selecting the database
or die("Database server connection failed");
@mysql_select_db("test") //Select database mydb
or die("Database does not exist or is unavailable");
//Get user input
$username = $_POST['username'];
$passcode = $_POST['passcode'];
$cookie = $_POST['cookie'];
//Execute SQL statement
$query = @mysql_query("select username, userflag from users "
."where username = '$username' and passcode = '$passcode'")
or die("SQL statement execution failed");
//Determine whether the user exists and whether the password is correct
if($row = mysql_fetch_array($query))
{
if($row['userflag'] == 1 or $row['userflag'] == 0) //Determine whether the user permission information is valid
{
switch($cookie) //Set the cookie storage time according to the user's choice
{
Case 0: //Save Cookie as browser process
setcookie("username", $row['username']);
Break;
case 1: //save for 1 day
setcookie("username", $row['username'], time()+24*60*60);
Break;
Case 2: //Save for 30 days
setcookie("username", $row['username'], time()+30*24*60*60);
Break;
Case 3: //Save for 365 days
setcookie("username", $row['username'], time()+365*24*60*60);
Break;
}
header("location: main.php"); //Automatically jump to main.php
}
else
{
echo "User permission information is incorrect";
}
}
else
{
echo "Wrong username or password";
}
?>

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代码如下

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session_start(); if(isset($_COOKIE['username'])) { @mysql_connect("localhost", "root","1981427") //选择数据库之前需要先连接数据库服务器 or die("数据库服务器连接失败"); @mysql_select_db("test") //选择数据库mydb or die("数据库不存在或不可用"); //获取Session $username = $_COOKIE['username']; //执行SQL语句获得userflag的值 $query = @mysql_query("select userflag from users " ."where username = '$username'") or die("SQL语句执行失败"); $row = mysql_fetch_array($query); //获得用户权限信息 $flag = $row['userflag']; //根据userflag的值输出不同的欢迎信息 if($flag == 1) echo "欢迎管理员".$_SESSION['username']."登录系统"; if($flag == 0) echo "欢迎用户".$_SESSION['username']."登录系统"; echo "注销"; } else { echo "您没有权限访问本页面"; } ?>

The code is as follows

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session_start(); if(isset($_COOKIE['username'])) { @mysql_connect("localhost", "root","1981427") //You need to connect to the database server before selecting the database or die("Database server connection failed"); @mysql_select_db("test") //Select database mydb or die("Database does not exist or is unavailable"); //Get Session $username = $_COOKIE['username']; //Execute the SQL statement to obtain the value of userflag $query = @mysql_query("select userflag from users " ."where username = '$username'") or die("SQL statement execution failed"); $row = mysql_fetch_array($query); //Get user permission information $flag = $row['userflag']; //Output different welcome messages based on the value of userflag if($flag == 1) echo "Welcome administrator".$_SESSION['username']."Log in to the system"; if($flag == 0) echo "Welcome user".$_SESSION['username']."Log in to the system"; echo "Logout"; } else { echo "You do not have permission to access this page"; } ?>

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The code is as follows

代码如下	复制代码
setcookie("username"); echo "注销成功"; ?>

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setcookie("username");
echo "Logout successful";
?>

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TechArticle

provides an automatic cookie login method. Users can choose to save the process for several days and months when logging in. We only need to make a judgment when entering the page and we will be KO. The code is as follows Copy the code...