php 登录注册
注册代码：register.php
<style type="text/css">form{width:300px;background-color:#EEE0E5;margin-left:300px;margin-top:30px;padding:30px;}button{margin-top:20px;}
</style>
<form method="post">
<label>用户名:<input type="text" name="name"></label>
<br/><br/>
<label>密码:<input type="password" name="pw"></label>
<br/><br/>
<label>再次输入密码:<input type="password" name="repw"></label>
<button type="submit" name="submit">注册</button>
</form>
<?php
$link = mysqli_connect('localhost', 'root', 'root', 'test');
if (!$link) {die('Could not connect: ' . mysql_error());
}else {if (isset($_POST['submit'])){if ($_POST['pw'] == $_POST['repw']){$query = "insert into user (name,pw) values('{$_POST['name']}','{$_POST['pw']}')";$result=mysqli_query($link, $query);header("Location:login.php");}else {echo "<script>alert('两次输入密码不一致！')</script>";}}
}
?>登录代码： login.php
<style type="text/css">form{width:300px;background-color:#EEE0E5;margin-left:300px;margin-top:30px;padding:30px;}
</style>
<form method="post">
<label>用户名:<input type="text" name="name"></label>
<br/><br/>
<label>密码:<input type="password" name="pw"></label>
<br/><br/>
<button type="submit" name="submit">登录</button>
</form>
<?php
$link = mysqli_connect('localhost', 'root', 'root', 'test');
if (!$link){echo"<script>alert('数据库连接失败！')</script>";
}else {if (isset($_POST['submit'])){$query = "select * from user where name = '{$_POST['name']}' and pw = '{$_POST['pw']}'";$result = mysqli_query($link, $query);if (mysqli_num_rows($result) == 1){header("Location:index.php");}}
}
?>
<?php
$link = mysqli_connect('localhost', 'root', 'root', 'test');
if (!$link) {die('Could not connect: ' . mysql_error());
}else {if (isset($_POST['submit'])){if ($_POST['pw'] == $_POST['repw']){$query = "insert into user (name,pw) values('{$_POST['name']}','{$_POST['pw']}')";$result=mysqli_query($link, $query);header("Location:login.php");}else {echo "<script>alert('两次输入密码不一致！')</script>";}}
}
?>
