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   学习PHP很久啦,对PHP语言也熟悉啦,想设计简单的会员系统,内容包括:创建数据库和表、会员注册、会员登录、会员权限设置。涉及到的知识点:md5加密,Cookie/Session创建、使用、销毁等。下面将详细介绍怎样开发一个简单会员系统。

   one,Window+Apache+MySQL+PHP集成开发环境,大家可以在网上下载。

创建数据库和表。在phpAdmin中创建一个名为member的数据库,在其中建立一种会员表,表名为:user_list, 其中主要字段包括:uid(会员ID值)、m_id(会员权限)、username(用户名)、password(密码)。关于表格中各字段的详细介绍如下表:

two,写一个配置文件。该配置文件主要信息:开启Session设置;连接数据库;密码安全附加信息;用户判断用户是否登录,以及其是否具有访问权限的函数;用于查看会员登录是否超时的函数。具体代码如下: 

//开启Session设置

session_start();

//连接数据库

$conn=mysql_connect('localhost', 'root', '');

mysql_select_db('member', $conn);

//密码安全附加信息

define(ALL_PS, "PHP100");

//用户判断用户是否登录,以及其是否具有访问权限

function user_shell($uid, $shell, $m_id){

$sql = "select * from user_list where uid =  '$uid' ";

$query = mysql_query($sql);

$us = is_array($row = mysql_fetch_array($query));

$shell = $us ? $shell == md5($row['username'].$row['password'].ALL_PS) : FALSE;

if($shell){

if($row['m_id']

return $row;

}else{

echo "你的权限不足";

exit();

}

}else{

echo "你无权限访问该页面";

exit();

}

}

// 查看会员登录是否超时

function user_mktime($onlinetime){

$new_time = mktime();

if($new_time-$onlinetime > '10'){

echo "登录超时";

session_destroy();

}else{

$_SESSION['times'] = mktime(); //更新当前时间

}

}

?>

会员注册页面编写。新建一个会员注册的页面,命名为login.php。具体代码如下

if($_POST['submit']){

$username= str_replace(" ","", $_POST['username']);

echo $username."
";

$password = md5($_POST['password'].ALL_PS);

echo $password."
";

$sql = "insert  into user_list(uid, m_id,username,password)  values(null, '0', '$username', '$password' ) ";

$query = mysql_query($sql);

 

//获得受影响的行数

$row=mysql_affected_rows($conn);

if($row>0)

{

echo "注册成功";

}else{

echo "注册失败";

}  

}

?>

用户名:

密--码:


进行会员注册。这里我们可以通过我们编写的注册页面进行会员的注册,注册后的信息会添加入相应的数据库中,如图:

会员登录页面编写。新建一个会员登入的页面,命名为user.php。具体代码如下:

include("config.php");

if($_POST['submit']){

$username= $_POST['username'];

$sql = "select * from user_list where username =  '$username' ";

$query = mysql_query($sql);

$us = is_array($row = mysql_fetch_array($query));

echo $us."
";

$ps = $us ? md5($_POST['password'].ALL_PS) == $row['password'] : FALSE;

if($ps){

$_SESSION['uid'] = $row['uid'];

$_SESSION['user_shell'] = md5($row['username'].$row['password'].ALL_PS);

$_SESSION['times'] = mktime();  //登录的时间

echo $_SESSION['times']."
";

echo "登录成功";

}else{

echo "用户名或密码错误";

session_destroy();

}

}

?>

用户名:

密--码:


会员访问的页面的创建。新建一个会员访问的界面,命名为user_sys.php,这个页面中要进行会员是否登录以及是否有访问权限的设置,具体代码如下:

include("config.php");

//echo $_SESSION['uid']."
";

//echo $_SESSION['user_shell'];

$arr = user_shell($_SESSION['uid'] , $_SESSION['user_shell'], 4);

echo $_SESSION['times']."
";

echo mktime();

echo "用户名:".$arr['username']."
";

echo "密码:".$arr['password']."
";

echo "m_id:".$arr['m_id']."
";

user_mktime($_SESSION['times']);

?>

权限内容

7

至此,我们的一个简单的会员系统就开发完成。图:

至此,会员登录系统设计完毕

end,练习一下



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