1.新建三个html文件，两个php文件和若干个css文件和若干个js文件
2.登录的html页面显示效果图
3.注册的页面的显示效果图
4.登录页面的form表单代码
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<div class="sign-con w1200">
<img src="img/logn-tu.gif" class="sign-contu f-l"/>
<form action="login.php" method="post">
<div class="sign-ipt f-l">
<p>用户名：</p>
<input type="text" name="username" placeholder="手机号/邮箱" />
<p>密码：</p>
<input type="password" name="password" placeholder="密码可见" />
<br />
<button class="slig-btn">登录</button>
<p>
没有账号？请
<a href="regist.html" rel="external nofollow" >注册</a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="wj">忘记密码？</a>
</p>
<div class="sign-qx">
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="f-r">
<img src="img/sign-xinlan.gif" />
</a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="qq f-r">
<img src="img/sign-qq.gif" />
</a>
<div style="clear: both;"></div>
</div>
</div>
</form>
<div style="clear: both;"></div>
</div>
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5.注册页面的form表单代码
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<div class="password-con registered">
<form action="regist.php" method="post">
<div class="psw">
<p class="psw-p1">用户名</p>
<input type="text" name="username" placeholder="hr了" />
<span class="dui"></span>
</div>
<div class="psw">
<p class="psw-p1">输入密码</p>
<input type="password" name="password" placeholder="请输入密码" />
<span class="cuo">密码由6-16的字母、数字、符号组成</span>
</div>
<div class="psw">
<p class="psw-p1">确认密码</p>
<input type="password" name="repassword" placeholder="请再次输入密码" />
<span class="cuo">密码不一致，请重新输入</span>
</div>
<div class="psw psw2">
<p class="psw-p1">手机号/邮箱</p>
<input type="text" name="telphone" placeholder="请输入手机/邮箱验证码" />
<button>获取短信验证码</button>
</div>
<div class="psw psw3">
<p class="psw-p1">验证码</p>
<input type="text" placeholder="请输入验证码" />
</div>
<div class="yanzhentu">
<div class="yz-tu f-l">
<img src="img/psw-yanzhengtu.gif" />
</div>
<p class="f-l">
看不清楚？
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >换张图</a>
</p>
<div style="clear: both;"></div>
</div>
<div class="agreement">
<input type="checkbox" name="hobby" />
<p>
我有阅读并同意
<span>《宅客微购网站服务协议》</span>
</p>
</div>
<button type="submit" value="注册" class="psw-btn">立即注册</button>
<p class="sign-in">
已有账号？请
<a href="login.html" rel="external nofollow" >登录</a>
</p>
</form>
</div><!-- 注册框结束 -->
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6.login.php代码
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<?php
header("content-type: text/html; charset=utf-8");
$username = $_post['username'];
$password = $_post['password'];
$conn = new mysqli('localhost','root','root','shopping');
if ($conn->connect_error){
echo '数据库连接失败！';
exit(0);
}else{
if ($username == ''){
echo '<script>alert("请输入用户名！");history.go(-1);</script>';
exit(0);
}
if ($password == ''){
echo '<script>alert("请输入密码！");history.go(-1);</script>';
exit(0);
}
$sql = "select username,password from userinfo where username = '$_post[username]' and password = '$_post[password]'";
$result = $conn->query($sql);
$number = mysqli_num_rows($result);
if ($number) {
echo '<script>window.location="index.html";</script>';
} else {
echo '<script>alert("用户名或密码错误！");history.go(-1);</script>';
}
}
?>
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7.regist.php代码
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<?php
header("content-type: text/html; charset=utf-8");
$username = $_post['username'];
$password = $_post['password'];
$repassword = $_post['repassword'];
$telphone = $_post['telphone'];
if ($username == ''){
echo '<script>alert("请输入用户名！");history.go(-1);</script>';
exit(0);
}
if ($password == ''){
echo '<script>alert("请输入密码");history.go(-1);</script>';
exit(0);
}
if ($password != $repassword){
echo '<script>alert("密码与确认密码应该一致");history.go(-1);</script>';
exit(0);
}
if($password == $repassword){
$conn = new mysqli('localhost','root','root','shopping');
if ($conn->connect_error){
echo '数据库连接失败！';
exit(0);
}else {
$sql = "select username from userinfo where username = '$_post[username]'";
$result = $conn->query($sql);
$number = mysqli_num_rows($result);
if ($number) {
echo '<script>alert("用户名已经存在");history.go(-1);</script>';
} else {
$sql_insert = "insert into userinfo (username,password,telphone) values('$_post[username]','$_post[password]','$_post[telphone]')";
$res_insert = $conn->query($sql_insert);
if ($res_insert) {
echo '<script>window.location="index.html";</script>';
} else {
echo "<script>alert('系统繁忙，请稍候！');</script>";
}
}
}
}else{
echo "<script>alert('提交未成功！'); history.go(-1);</script>";
}
?>
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8.进入首页后的图片
9.数据库的图片
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原文链接：https://blog.csdn.net/qq_29656961/article/details/78924085