h5用户注册和登录源码
时间: 2023-06-18 18:03:41 浏览: 74
对于注册和登录的源码,要根据具体的技术栈和需求来选择,以下是一个基于HTML5、CSS3、JavaScript和PHP的简单示例:
HTML部分:
```html
<!DOCTYPE html>
<html>
<head>
<title>用户注册和登录</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div class="container">
<div class="form">
<h2>用户注册</h2>
<form action="register.php" method="post">
<label for="username">用户名:</label>
<input type="text" id="username" name="username" required>
<label for="password">密码:</label>
<input type="password" id="password" name="password" required>
<button type="submit">注册</button>
</form>
</div>
<div class="form">
<h2>用户登录</h2>
<form action="login.php" method="post">
<label for="username">用户名:</label>
<input type="text" id="username" name="username" required>
<label for="password">密码:</label>
<input type="password" id="password" name="password" required>
<button type="submit">登录</button>
</form>
</div>
</div>
</body>
</html>
```
CSS部分:
```css
* {
box-sizing: border-box;
}
body {
background-color: #f2f2f2;
font-family: Arial, sans-serif;
}
.container {
display: flex;
flex-wrap: wrap;
justify-content: center;
align-items: center;
height: 100vh;
}
.form {
background-color: #fff;
border-radius: 10px;
box-shadow: 0 0 10px #ccc;
display: flex;
flex-direction: column;
align-items: center;
padding: 20px;
margin: 20px;
}
h2 {
margin: 0 0 20px;
}
label {
display: block;
margin-bottom: 5px;
}
input[type="text"],
input[type="password"] {
width: 100%;
padding: 10px;
margin-bottom: 20px;
border: none;
border-radius: 5px;
box-shadow: 0 0 5px #ccc;
}
button {
background-color: #4CAF50;
color: #fff;
border: none;
border-radius: 5px;
padding: 10px 20px;
cursor: pointer;
}
button:hover {
background-color: #3e8e41;
}
```
PHP部分:
register.php
```php
<?php
//连接数据库
$conn = mysqli_connect("localhost", "root", "", "test");
if (!$conn) {
die("连接失败:" . mysqli_connect_error());
}
//获取表单数据
$username = $_POST["username"];
$password = $_POST["password"];
//查询用户名是否存在
$sql = "SELECT * FROM users WHERE username='$username'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
echo "用户名已存在";
} else {
//插入数据
$sql = "INSERT INTO users (username, password) VALUES ('$username', '$password')";
if (mysqli_query($conn, $sql)) {
echo "注册成功";
} else {
echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}
}
mysqli_close($conn);
?>
```
login.php
```php
<?php
//连接数据库
$conn = mysqli_connect("localhost", "root", "", "test");
if (!$conn) {
die("连接失败:" . mysqli_connect_error());
}
//获取表单数据
$username = $_POST["username"];
$password = $_POST["password"];
//查询用户是否存在
$sql = "SELECT * FROM users WHERE username='$username' AND password='$password'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
echo "登录成功";
} else {
echo "用户名或密码错误";
}
mysqli_close($conn);
?>
```
以上代码仅供参考,实际应用中需要根据具体情况进行修改和完善。同时需要注意安全性问题,如防止SQL注入等。
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