php小项目：聊天室(注册，登录，聊天==)
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注册主页面:
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>用户注册</title> 6 </head> 7 <body> 8 <table width="360px" border="1" align="center"> 9 <form method="post" action="reg_do.php"> 10 <tr> 11 <td align="center" colspan="2" style="font-size: 36px">用户注册</td> 12 </tr> 13 <tr> 14 <td>用户名:</td> 15 <td><input type="text" name="username" id="username"></td> 16 </tr> 17 <tr> 18 <td>用户昵称:</td> 19 <td><input type="text" name="nickname" id="nickname"></td> 20 </tr> 21 <tr> 22 <td>用户密码:</td> 23 <td><input type="password" name="password" id="password"></td> 24 </tr> 25 <tr> 26 <td>重复密码:</td> 27 <td><input type="password" name="repeatpassword" id="repeatpassword"></td> 28 </tr> 29 <tr> 30 <td>用户头像:</td> 31 <td><input type="button" value="选择头像" name="profile" id="profile"></td> 32 </tr> 33 <tr> 34 <td colspan="2" align="center"><input type="submit" name="register" id="register"></td> 35 </tr> 36 </form> 37 </table> 38 </body> 39 </html>
注册主页面提交后判断提交数据是否符合要求，符合要求，跳到登录页面
1 <?php include_once(‘config.php‘) ?> 2 <!DOCTYPE html> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body> 8 <?php 9 $username = $_POST[‘username‘]; 10 $nickname = $_POST[‘nickname‘]; 11 $password = $_POST[‘password‘]; 12 $repeatpassword = $_POST[‘repeatpassword‘]; 13 if (!$username) 14 { 15 exit(‘<script>alert("请填写用户名! ") 16 history.back();</script>‘); 17 } 18 if (!$nickname) 19 { 20 exit(‘<script>alert("请填写用户昵称! ") 21 history.back();</script>‘); 22 } 23 if (!$password) 24 { 25 exit(‘<script>alert("请填写密码! ") 26 history.back();</script>‘); 27 } 28 if (!$repeatpassword) 29 { 30 exit(‘<script>alert("请填写重复密码! ") 31 history.back();</script>‘); 32 } 33 //同时判断其他的参数是否填写 34 35 //判断该用户名是否存在 36 $sql = "select * from userlist where username = ‘" . $username . "‘ "; 37 $query = mysqli_query($db, $sql); 38 if (!$query) 39 { 40 exit(‘SQL语句执行错误:1 ‘ . mysqli_error($db)); 41 } 42 if ($info = mysqli_fetch_array($query)) 43 { 44 exit(‘<script>alert("该用户名已存在, 请重新填写!");history.back();</script>‘); 45 } 46 47 //判断密码是否一致 48 if ($password != $repeatpassword) 49 { 50 die(‘<script>alert("两次填写密码不一致，请重写填写")</script>‘); 51 } 52 53 //执行注册 54 $sql = "insert into userlist(username, nickname, password, regtime, regip) values(‘" . $username . "‘, ‘". $nickname . "‘, ‘". md5($password) . "‘, " 55 . time() . ", ‘". $_SERVER[‘REMOTE_ADDR‘] . "‘)";//点怎么可以连接整数了 56 $query = mysqli_query($db, $sql); 57 if (!$query) 58 { 59 exit(‘SQL语句执行错误:‘ . mysqli_error($db)); 60 } 61 else 62 { 63 exit(‘<script>alert("注册成功,请登录");window.location.href = "sign_in.php"</script>‘); 64 } 65 ?> 66 </body> 67 </html>
登录页面:
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>用户登录</title> 6 </head> 7 <body> 8 <table width="360px" border="1" align="center"> 9 <form method="post" action="sign_do.php"> 10 <tr> 11 <td align="center" colspan="2" style="font-size: 36px">用户登录</td> 12 </tr> 13 <tr> 14 <td>用户名:</td> 15 <td><input type="text" name="username" id="username"></td> 16 </tr> 17 <tr> 18 <td>用户密码:</td> 19 <td><input type="password" name="password" id="password"></td> 20 </tr> 21 <tr> 22 <td colspan="2" align="center"><input type="submit" name="register" id="register">如果您没有账号,请<a href="register.php">注册</a></td> 23 </tr> 24 </form> 25 </table> 26 </body> 27 </html>
判断登录信息，登录成功，跳转到聊天室:
1 <?php include_once(‘config.php‘) ?> 2 <!DOCTYPE html> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body> 8 <?php 9 $username = $_POST[‘username‘]; 10 $password = $_POST[‘password‘]; 11 if (!$username) 12 { 13 exit(‘<script>alert("请填写用户名! ") 14 history.back();</script>‘); 15 } 16 if (!$password) 17 { 18 exit(‘<script>alert("请填写密码! ") 19 history.back();</script>‘); 20 } 21 22 //若用户名正确，判断密码是否正确 23 $sql = "select * from userlist where username = ‘" . $username ."‘ and password = ‘" . md5($password) . "‘ "; 24 $query = mysqli_query($db, $sql); 25 if (!$query) 26 { 27 exit(‘SQL语句执行错误: ‘ . mysqli_error($db)); 28 } 29 if (!$info = mysqli_fetch_array($query)) 30 { 31 exit(‘<script>alert("密码不正确, 请重新填写!");history.back();</script>‘); 32 } 33 34 $_SESSION[‘uid‘] = $info[‘uid‘]; 35 $_SESSION[‘nickname‘] = $info[‘nickname‘]; 36 die(‘<script>alert("登录成功");window.location.href="chat.php"</script>‘) 37 ?> 38 </body> 39 </html>
聊天室(未更新完)
1 <?php include_once(‘config.php‘) ?> 2 <!DOCTYPE html> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body background=""> 8 <?php 9 $name = $_SESSION[‘nickname‘]; 10 echo ‘欢迎您,‘, $name; 11 ?> 12 <a href="signout.php">注销</a> 13 <br/> 14 <table width="1000px" border="1" align="center"> 15 <form method="post" action="record.php"> 16 <tr> 17 <td colspan="2">添加留言</td> 18 </tr> 19 <tr> 20 <td align="center" style="font-size: 36px">留言:</td> 21 <td><textarea rows="10" cols="40" name="record"></textarea></td> 22 </tr> 23 <tr> 24 <td></td> 25 <td><input type="submit" name="chat"></td> 26 </tr> 27 </form> 28 </table> 29 </body> 30 </html>
聊天室留言判断
1 <?php 2 include_once(‘config.php‘); 3 include_once(‘if_register.php‘); 4 ?> 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <title></title> 9 </head> 10 <body> 11 <?php 12 $comment = $_POST[‘record‘]; 13 $uid = $_SESSION[‘uid‘]; 14 $addtime = time(); 15 $active = 0; 16 $ip = $_SERVER[‘REMOTE_ADDR‘]; 17 if (!$comment) 18 { 19 die(‘<script>alert("评论不能为空"); history.back();</script>‘); 20 } 21 $sql = "insert into chat(comment, uid, addtime, active, ip) values (‘" . $comment . "‘,‘" . $uid . "‘,‘" . $addtime . "‘,‘" . $active . "‘,‘" . $ip . "‘)"; 22 $query = mysqli_query($db, $sql); 23 if (!$query) 24 { 25 die(‘SQL语句执行错误‘. mysqli_error($db)); 26 } 27 else 28 { 29 die(‘<script>alert("留言成功");window.location.href = "chat.php"</script>‘); 30 } 31 ?> 32 </body> 33 </html>
未完待续
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