代码
dbtest.sql
1 CREATE DATABASE `dbtest` ; 2 CREATE TABLE `dbtest`.`users` ( 3 `user_id` INT( 5 ) NOT NULL AUTO_INCREMENT PRIMARY KEY , 4 `username` VARCHAR( 25 ) NOT NULL , 5 `email` VARCHAR( 35 ) NOT NULL , 6 `password` VARCHAR( 50 ) NOT NULL , 7 UNIQUE (`email`) 8 ) ENGINE = MYISAM ;
dbconnect.php
1 <?php
2 if(!mysql_connect("localhost","root","root"))
3 {
4 die(‘oops connection problem ! --> ‘.mysql_error());
5 }
6 if(!mysql_select_db("dbtest"))
7 {
8 die(‘oops database selection problem ! --> ‘.mysql_error());
9 }
10 ?>
index.php
1 <?php
2 session_start();
3 include_once ‘dbconnect.php‘;
4
5 if(isset($_SESSION[‘user‘])!="")
6 {
7 header("Location: home.php");
8 }
9 if(isset($_POST[‘btn-login‘]))
10 {
11 $email = mysql_real_escape_string($_POST[‘email‘]);
12 $upass = mysql_real_escape_string($_POST[‘pass‘]);
13 $res=mysql_query("SELECT * FROM users WHERE email=‘$email‘");
14 $row=mysql_fetch_array($res);
15 if($row[‘password‘]==md5($upass))
16 {
17 $_SESSION[‘user‘] = $row[‘user_id‘];
18 header("Location: home.php");
19 }
20 else
21 {
22 ?>
23 <script>alert(‘wrong details‘);</script>
24 <?php
25 }
26
27 }
28 ?>
29 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
30 <html xmlns="http://www.w3.org/1999/xhtml">
31 <head>
32 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
33 <title>cleartuts - Login & Registration System</title>
34 <link rel="stylesheet" href="style.css" type="text/css" />
35 </head>
36 <body>
37 <center>
38 <div id="login-form">
39 <form method="post">
40 <table align="center" width="30%" border="0">
41 <tr>
42 <td><input type="text" name="email" placeholder="Your Email" required /></td>
43 </tr>
44 <tr>
45 <td><input type="password" name="pass" placeholder="Your Password" required /></td>
46 </tr>
47 <tr>
48 <td><button type="submit" name="btn-login">Sign In</button></td>
49 </tr>
50 <tr>
51 <td><a href="register.php">Sign Up Here</a></td>
52 </tr>
53 </table>
54 </form>
55 </div>
56 </center>
57 </body>
58 </html>
home.php
1 <?php
2 session_start();
3 include_once ‘dbconnect.php‘;
4
5 if(!isset($_SESSION[‘user‘]))
6 {
7 header("Location: index.php");
8 }
9 $res=mysql_query("SELECT * FROM users WHERE user_id=".$_SESSION[‘user‘]);
10 $userRow=mysql_fetch_array($res);
11 ?>
12 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
13 <html xmlns="http://www.w3.org/1999/xhtml">
14 <head>
15 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
16 <title>Welcome - <?php echo $userRow[‘email‘]; ?></title>
17 <link rel="stylesheet" href="style.css" type="text/css" />
18 </head>
19 <body>
20 <div id="header">
21 <div id="left">
22 <label>cleartuts</label>
23 </div>
24 <div id="right">
25 <div id="content">
26 hi‘ <?php echo $userRow[‘username‘]; ?> <a href="logout.php?logout">Sign Out</a>
27 </div>
28 </div>
29 </div>
30 </body>
31 </html>
register.php
1 <?php
2 session_start();
3 if(isset($_SESSION[‘user‘])!="")
4 {
5 header("Location: home.php");
6 }
7 include_once ‘dbconnect.php‘;
8
9 if(isset($_POST[‘btn-signup‘]))
10 {
11 $uname = mysql_real_escape_string($_POST[‘uname‘]);
12 $email = mysql_real_escape_string($_POST[‘email‘]);
13 $upass = md5(mysql_real_escape_string($_POST[‘pass‘]));
14
15 if(mysql_query("INSERT INTO users(username,email,password) VALUES(‘$uname‘,‘$email‘,‘$upass‘)"))
16 {
17 ?>
18 <script>alert(‘successfully registered ‘);</script>
19 <?php
20 }
21 else
22 {
23 ?>
24 <script>alert(‘error while registering you...‘);</script>
25 <?php
26 }
27 }
28 ?>
29 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
30 <html xmlns="http://www.w3.org/1999/xhtml">
31 <head>
32 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
33 <title>Login & Registration System</title>
34 <link rel="stylesheet" href="style.css" type="text/css" />
35
36 </head>
37 <body>
38 <center>
39 <div id="login-form">
40 <form method="post">
41 <table align="center" width="30%" border="0">
42 <tr>
43 <td><input type="text" name="uname" placeholder="User Name" required /></td>
44 </tr>
45 <tr>
46 <td><input type="email" name="email" placeholder="Your Email" required /></td>
47 </tr>
48 <tr>
49 <td><input type="password" name="pass" placeholder="Your Password" required /></td>
50 </tr>
51 <tr>
52 <td><button type="submit" name="btn-signup">Sign Me Up</button></td>
53 </tr>
54 <tr>
55 <td><a href="index.php">Sign In Here</a></td>
56 </tr>
57 </table>
58 </form>
59 </div>
60 </center>
61 </body>
62 </html>
logout.php
1 <?php
2 session_start();
3
4 if(!isset($_SESSION[‘user‘]))
5 {
6 header("Location: index.php");
7 }
8 else if(isset($_SESSION[‘user‘])!="")
9 {
10 header("Location: home.php");
11 }
12
13 if(isset($_GET[‘logout‘]))
14 {
15 session_destroy();
16 unset($_SESSION[‘user‘]);
17 header("Location: index.php");
18 }
19 ?>
时间： 2024-10-09 21:18:31