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注册，登录.php

2016-08-15 19:18 330 查看 
login.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<form action="submit.php" method="post">
username:<input type="text" name="username">
password:<input type="text" name="password">
tel: <input type="text" name="tel">
<input type="submit" value="登录" name="type">
<input type="submit" value="注册" name="type">
</form>
</body>
</html>
submit.php
<?php/*** Created by PhpStorm.* User: dllo* Date: 16/8/11* Time: 上午10:11*/// php文件外部引入//include_oncerequire_once "initsql.php";header("Content-type:text/html;charset=utf-8");$type = $_POST["type"];$username= $_POST["username"];$password = $_POST["password"];$tel = $_POST["tel"];switch ($type){case "登录":$sql = "SELECT * FROM user WHERE username = '{$username}' AND password = '{$password}'";$result = mysql_query($sql);if ($result){//           $row = mysql_fetch_assoc($result);//            print_r($row);//            if ($row["id"] > 0){//                echo "登陆成功";//       }// 查询结果的个数if (mysql_num_rows($result) > 0){echo "登陆成功";} else{echo "登陆失败";}}else{echo "用户名或密码不正确！";}break;case "注册":$sql = "SELECT * FROM user WHERE username = '{$username}'";$result = mysql_query($sql);if (mysql_num_rows($result) > 0){echo "用户名已存在,请重新注册";}else{$sql = "INSERT INTO user (id,username,password,tel) VALUES (NULL,'{$username}','{$password}','{$tel}')";mysql_query($sql);if (mysql_insert_id() > 0){echo "注册成功";}else{echo "注册失败";}}break;}?>

                                            

                                        

                        
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