PHP实现简单注册登录详细代码

发布:smiling　来源: PHP粉丝网　添加日期：2022-04-08 10:51:03　浏览: 评论：0　

这篇文章主要介绍了PHP实现简单注册登录详细全部代码实例讲解,代码讲解的很清楚，对这方面不懂的初学者可以照着练习研究下。

PHP实现简单注册登录详细全部代码先看演示~

示例图：

PHP实现简单注册登录详细代码

Ps.本人有点懒哈~ 就输出个成功算了吧~

PHP实现简单注册登录详细代码

PHP实现登录注册

index.php (首页)

代码里面注释写很详细了哦~ 废话不多说直接上代码~

index.php文件

代码如下：

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<meta name="viewport" content="width=device-width, initial-scale=1">

<title>Zhe - 注册登录</title>

<link rel="stylesheet" type="text/css" href="https://www.layuicdn.com/layui/css/layui.css" rel="external nofollow" />

<script src="https://www.layuicdn.com/layui/layui.js" charset="utf-8"></script>

</head>

<body>

<fieldset class="layui-elem-field layui-field-title" style="margin-top: 20px;">

<legend>Zhe - 登录注册演示</legend>

</fieldset>

<div style="padding: 20px; background-color: #F2F2F2;">

<div class="layui-row layui-col-space15">

<div class="layui-col-md6">

  <div class="layui-card">

  <div class="layui-card-header">注册</div>

  <div class="layui-card-body">

            <form class="layui-form" action="register.php" method="post" onsubmit="return checkForm(this)" lay-filter="example">

             <div class="layui-form-item">

             <label class="layui-form-label">输入框</label>

             <div class="layui-input-block">

              <input type="text" name="username" placeholder="请输入账号" class="layui-input">

             </div>

             </div>

             <div class="layui-form-item">

             <label class="layui-form-label">密码框</label>

             <div class="layui-input-block">

              <input type="password" name="password" placeholder="请输入密码" class="layui-input">

             </div>

             </div>

             <div class="layui-form-item">

             <div class="layui-input-block">

              <input type="submit" class="layui-btn layui-btn-normal" value="立即注册"/>

             </div>

             </div>

            </form>

  </div>

  </div>

</div>

<div class="layui-col-md6">

  <div class="layui-card">

  <div class="layui-card-header">登录</div>

  <div class="layui-card-body">

            <form class="layui-form" action="login.php" method="post" onsubmit="return checkForm(this)" lay-filter="example">

             <div class="layui-form-item">

             <label class="layui-form-label">输入框</label>

             <div class="layui-input-block">

              <input type="text" name="username" placeholder="请输入账号" class="layui-input">

             </div>

             </div>

             <div class="layui-form-item">

             <label class="layui-form-label">密码框</label>

             <div class="layui-input-block">

              <input type="password" name="password" placeholder="请输入密码" class="layui-input">

             </div>

             </div>

             <div class="layui-form-item">

             <div class="layui-input-block">

                 <input type="submit" class="layui-btn layui-btn-normal" value="立即登录"/>

             </div>

             </div>

            </form>

  </div>

  </div>

</div>

</div>

</div>

<script type="text/javascript">

    // 验证输入不为空的脚本代码

    function checkForm(form) {

    if(form.username.value == "") {

    alert("用户名不能为空!");

    form.username.focus();

    return false;

    }

    if(form.password.value == "") {

    alert("密码不能为空!");

    form.password.focus();

    return false;

    }

    return true;

    }

</script>

</body>

</html>

代码如下：

<?php

    session_start();

    header("content-type:text/html;charset=utf-8");

    //连接数据库

    $link = mysqli_connect("localhost","pay_com_cn","pay_com_cn","pay_com_cn");

    if (!$link) {

        die("连接失败: " . mysqli_connect_error());

    }

    //接收$_POST用户名和密码

    $username = $_POST['username'];

    $password = $_POST['password'];

    //查看表user用户名与密码和传输值是否相等

    $sql = "SELECT * FROM user WHERE username = '$username' AND password = '$password'";

    //result必需规定由 mysqli_query()、mysqli_store_result() 或 mysqli_use_result() 返回的结果集标识符。

    $result = mysqli_query($link,$sql);

    $num = mysqli_num_rows($result);//函数返回结果集中行的数量

    //判断是否登录后显示或跳转

    if($num){

        echo '登录成功';

    }else{

        echo'登录失败';

    }

    mysqli_close($link);//关闭数据库

?>

代码如下：

<?php

    header("content-type:text/html;charset=utf-8");

    //连接数据库

    $link = mysqli_connect("localhost","pay_com_cn","pay_com_cn","pay_com_cn");

    if (!$link) {

        die("连接失败: " . mysqli_connect_error());

    }

    //接收$_POST用户名和密码

    $username=$_POST['username'];

    $password=$_POST['password'];

    //查看表user用户名是否存在或为空

    $sql_select = "SELECT * FROM user WHERE username = '$username'";

    //result必需规定由 mysqli_query()、mysqli_store_result() 或 mysqli_use_result() 返回的结果集标识符。

    $select = mysqli_query($link,$sql_select);

    $num = mysqli_num_rows($select);//函数返回结果集中行的数量

    if($username == "" || $password == "")

    {

        echo "请确认信息完整性";

    }else if($num){

        echo "已存在用户名";//已存在账户名输出错误

    }else{

            $sql="insert into user(username,password) values('$username','$password')";

            $result=mysqli_query($link,$sql);

            //判断是否注册后显示内容

            if(!$result)

            {

                echo "注册不成功！"."<br>";//输出错误

                echo "<a href='index.php'>返回</a>";//超链接到首页

            }

            else

            {

                echo "注册成功!"."<br/>";//输出成功

                echo "<a href='index.hphp'>立刻登录</a>";//超链接到首页

            }

        }



?>