这一节直接上代码,注意看注释.

templates/signup.php(注册)

只是两个输入框而已.我用的是jqm写的,也可以用普通的html写.

signup.php(注册)

include('conn.php');

include('lib.php');

include('ChromePhp.php');

session_start();

$error="";

//对提交的表单进行处理

if($_SERVER['REQUEST_METHOD'] == 'POST')

{

$name=format($_POST['name']);

$pwd=format($_POST['pwd']);

Chromephp::log($name);

Chromephp::log($pwd);

//检测用户名和密码都不为空

if(!empty($name) && !empty($pwd))

{

//查看用户名是否已被使用

$query=mysql_query("select * from users where name='$name'");

$time=time();

//如果提取的结果集为0,则说明没有被使用

if(mysql_num_rows($query)==0)

{

//插入数据库

mysql_query("insert into users (name, pwd, cover, regtime) values ('$name', '$pwd', '$default_cover', '$time')");

$query=mysql_query("select * from users where name='$name'");

$user=mysql_fetch_array($query);

//设置session和cookie

$_SESSION['uid']=$user['id'];

$_SESSION['name']=$user['name'];

setcookie('uid', $user['id'], time()+3600);

setcookie('name', $user['name'], time()+3600);

//跳转到用户中心

header("Location: user.php");

exit();

}

else

{

$error="用户名已存在";

include('templates/signup.php');

}

}

else

{

$error="用户名或密码不能为空";

include('templates/signup.php');

}

}

//如果是get请求,直接导入登陆界面代码

include('templates/signup.php');

?>

templates/login.php(登陆)

login.php(登陆)

include('conn.php');

include('lib.php');

include('ChromePhp.php');

session_start();

$error="";

if($_SERVER['REQUEST_METHOD'] == 'POST')

{

$name=format($_POST['name']);

$pwd=format($_POST['pwd']);

Chromephp::log($name);

Chromephp::log($pwd);

if(!empty($name) && !empty($pwd))

{

$query=mysql_query("select * from users where name='$name' and pwd='$pwd'");

if(mysql_num_rows($query)==1)

{

$user=mysql_fetch_array($query);

$_SESSION['uid']=$user['id'];

$_SESSION['name']=$user['name'];

setcookie('uid', $user['id'], time()+3600);

setcookie('name', $user['name'], time()+3600);

header("Location: user.php");

exit();

}

else

{

$error="用户名或密码错误";

include('templates/login.php');

}

}

else

{

$error="用户名或密码不能为空";

include('templates/login.php');

}

}

include('templates/login.php');

?>logout.php

include('conn.php');

include('lib.php');

include('ChromePhp.php');

/**同时注销session和cookie的页面*/

//即使是注销时，也必须首先开始会话才能访问会话变量

session_start();

//使用一个会话变量检查登录状态

if(isset($_SESSION['uid'])){

//要清除会话变量，将$_SESSION超级全局变量设置为一个空数组

$_SESSION = array();

//使用内置session_destroy()函数调用撤销会话

session_destroy();

}

//同时将各个cookie的到期时间设为过去的某个时间，使它们由系统删除，时间以秒为单位

setcookie('uid','',time()-3600);

setcookie('name','',time()-3600);

//location首部使浏览器重定向到另一个页面

$home_url = 'index.php';

header('Location:'.$home_url);

?>