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PHP+AJAX实现账号注册和登陆，附可用demo

来源：SegmentFault

时间：2023-02-16 19:58:48 367浏览收藏

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本篇文章向大家介绍《PHP+AJAX实现账号注册和登陆，附可用demo》，主要包括MySQL、PHP、注册、ajax、表单验证，具有一定的参考价值，需要的朋友可以参考一下。

注册

RegForm.html



    <meta charset="utf-8"><title>用户注册</title><link rel="stylesheet" type="text/css" href="css/Login-Reg.css"><h2 id="Reg-text">用户注册</h2>
    <div id="Form-con">
    <form id="form1" onsubmit="return false" action="##" method="post">
        &lt;input type=&quot;text&quot; name=&quot;username&quot; class=&quot;inputStyle&quot; placeholder=&quot;请输入账号&quot;&gt;<br>&lt;input type=&quot;password&quot; name=&quot;password&quot; class=&quot;inputStyle&quot; placeholder=&quot;请输入密码&quot;&gt;<br>&lt;input type=&quot;password&quot; name=&quot;cpassword&quot; class=&quot;inputStyle&quot; placeholder=&quot;请确认密码&quot;&gt;<br>&lt;input type=&quot;submit&quot; class=&quot;btnStyle&quot; value=&quot;注册&quot; onclick=&quot;RegUser()&quot;&gt;</form></div>
    <div id="Result"></div>
    

<!-- AJAX提交表单 -->
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><script type="text/javascript">
        function RegUser() {
            $.ajax({
                type: "POST",//方法
                url: "../server/RegUser.php" ,//表单接收url
                data: $('#form1').serialize(),
                success: function (data) {
                  //提交成功
                    var result=document.getElementById("Result");
                    result.innerHTML=data[0].result;
                    //注册后跳转
                    if (data[0].result == "注册成功") {
                        location.href="LoginFrom.html";
                    }
                },
                error : function(data) {
                  //提交失败
                    var result=document.getElementById("Result");
                    result.innerHTML="连接服务器失败";
                }
            });
        }
    </script>

RegUser.php

<?php header("Content-type:application/json");
// 注册账号验证

$username = $_POST["username"];//获取表单POST过来的用户名
$password = $_POST["password"];//获取表单POST过来的密码
$cpassword = $_POST["cpassword"];//获取表单POST过来的重复密码

//表单过滤

$user = trim($username);//过滤空格
$psw = trim($password);//过滤空格
$cpsw = trim($cpassword);//过滤空格

//开始判断

if($user == "" && $psw == "" && $cpsw == ""){
    echo "[{\"result\":\"都还没填呢！\"}]";
}else if($user == "" && $psw == ""){
    echo "[{\"result\":\"账号和密码都还没填呢\"}]";
}else if ($psw == "" && $cpsw == "") {
    echo "[{\"result\":\"密码都还没填呢\"}]";
}else if($user == "" && $cpsw == ""){
    echo "[{\"result\":\"账号和重复密码还没填呢\"}]";
}else if ($user == "") {
    echo "[{\"result\":\"账号还没填呢\"}]";
}else if ($psw == "") {
    echo "[{\"result\":\"密码还没填呢\"}]";
}else if ($cpsw == "") {
    echo "[{\"result\":\"重复密码还没填呢\"}]";
}else if ($psw !== $cpsw) {
    echo "[{\"result\":\"两次输入密码不一样呢\"}]";
}else if (strlen($user) < 5){
    echo "[{\"result\":\"账号不能小于5位数\"}]";
}else if (strlen($psw) < 8){
    echo "[{\"result\":\"密码不能小于8位数\"}]";
}else if (preg_match('/^[\x{4e00}-\x{9fa5}]+$/u', $user)>0){
    echo "[{\"result\":\"账号不能为中文\"}]";
}else if (preg_match('/[\x{4e00}-\x{9fa5}]/u', $user)>0){
    echo "[{\"result\":\"账号不能存在中文\"}]";
}else if(preg_match("/[\'.,:;*?~`!@#$%^&+=)({}]|\]|\[|\/|\\\|\"|\|/",$user)){
    echo "[{\"result\":\"账号不能存在特殊符号\"}]";
}else{
    //生成用户ID，为简单学习，随机生成随机数
    $uid = rand(10000,99999);
    //密码MD5加密
    $md5psw = MD5($psw);
    // 数据库连接
    $con = mysql_connect("localhost","root","root");
    mysql_select_db("test", $con);
    mysql_query("SET NAMES UTF8");

    //查询数据库是否有存在该用户
    $exist = mysql_query("SELECT * FROM userlist WHERE username = '$user'");
    $exist_result = mysql_num_rows($exist);
    if($exist_result){
        //如果存在该用户
        echo "[{\"result\":\"该账号已被注册\"}]";
    }else{
        //插入数据库
        mysql_query("INSERT INTO userlist (username, password, userid) VALUES ('$user', '$md5psw', '$uid')");
        echo "[{\"result\":\"注册成功\"}]";
    }
}
?>

登陆

LoginFrom.html



    <meta charset="utf-8"><title>用户登陆</title><link rel="stylesheet" type="text/css" href="css/Login-Reg.css"><h2 id="Reg-text">用户登陆</h2>
    <div id="Form-con">
    <form id="form1" onsubmit="return false" action="##" method="post">
        &lt;input type=&quot;text&quot; name=&quot;username&quot; class=&quot;inputStyle&quot; placeholder=&quot;请输入账号&quot;&gt;<br>&lt;input type=&quot;password&quot; name=&quot;password&quot; class=&quot;inputStyle&quot; placeholder=&quot;请输入密码&quot;&gt;<br>&lt;input type=&quot;submit&quot; class=&quot;btnStyle&quot; value=&quot;登陆&quot; onclick=&quot;LoginUser()&quot;&gt;</form></div>
    <div id="Result"></div>
    

<!-- AJAX提交表单 -->
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><script type="text/javascript">
        function LoginUser() {
            $.ajax({
                type: "POST",//方法
                url: "../server/LoginUser.php" ,//表单接收url
                data: $('#form1').serialize(),
                success: function (data) {
                    var result=document.getElementById("Result");
                    //提交成功
                    result.innerHTML=data[0].result;
                    if (data[0].result == "登陆成功") {
                        result.innerHTML="登陆成功";
                    }else if (data[0].result == "fail") {
                        result.innerHTML="登陆失败，账号或密码错误";
                    }
                },
                error : function(data) {
                  //提交失败的提示词或者其他反馈代码
                    var result=document.getElementById("Result");
                    result.innerHTML="连接服务器失败";
                }
            });
        }
    </script>

LoginUser.php

<?php header("Content-type:application/json");
// 注册账号验证

$username = $_POST["username"];//获取表单POST过来的用户名
$password = $_POST["password"];//获取表单POST过来的密码

//表单过滤

$user = trim($username);//过滤空格
$psw = trim($password);//过滤空格

//开始判断

if($user == "" && $psw == ""){
    echo "[{\"result\":\"账号和密码都没填呢！\"}]";
}else if ($user == "") {
    echo "[{\"result\":\"账号还没填呢\"}]";
}else if ($psw == "") {
    echo "[{\"result\":\"密码还没填呢\"}]";
}else{
    // 数据库连接
    $con = mysql_connect("localhost","root","root");
    mysql_select_db("test", $con);
    mysql_query("SET NAMES UTF8");

    //校验MD5密码
    $md5psw = MD5($psw);

    //查询数据库账号密码是否一致
    $exist = mysql_query("SELECT * FROM userlist WHERE username = '$user' AND password = '$md5psw'");
    $exist_result = mysql_num_rows($exist);
    if($exist_result){
        echo "[{\"result\":\"登陆成功\"}]";
    }else{
        echo "[{\"result\":\"fail\"}]";
    }
}
?>