前言登陆和注册已经是网站的标配了，所以这是我们web开发学习过程中必学的了。其实很容易实现，只需要懂数据库的增删改查，还有if_else的条件语句即可做出来。目录css –Login-Reg.css server –LoginUser.php –RegUser.php –LoginFrom.html–RegForm.html注册RegForm.html<!DOCTYPE html><html><head> <meta charset=“utf-8”> <title>用户注册</title> <link rel=“stylesheet” type=“text/css” href=“css/Login-Reg.css”></head><body> <h2 id=“Reg-text”>用户注册</h2> <div id=“Form-con”> <form id=“form1” onsubmit=“return false” action="##" method=“post”> <input type=“text” name=“username” class=“inputStyle” placeholder=“请输入账号”><br/> <input type=“password” name=“password” class=“inputStyle” placeholder=“请输入密码”><br/> <input type=“password” name=“cpassword” class=“inputStyle” placeholder=“请确认密码”><br/> <input type=“submit” class=“btnStyle” value=“注册” onclick=“RegUser()"> </div> <div id=“Result”></div> </form></body><!– 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: $(’#form1’).serialize(), success: function (data) { //提交成功 var result=document.getElementById(“Result”); result.innerHTML=data[0].result; //注册后跳转 if (data[0].result == “注册成功”) { location.href=“LoginFrom.html”; } }, error : function(data) { //提交失败 var result=document.getElementById(“Result”); result.innerHTML=“连接服务器失败”; } }); } </script></html>RegUser.php<?phpheader(“Content-type:application/json”);// 注册账号验证$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<!DOCTYPE html><html><head> <meta charset=“utf-8”> <title>用户登陆</title> <link rel=“stylesheet” type=“text/css” href=“css/Login-Reg.css”></head><body> <h2 id=“Reg-text”>用户登陆</h2> <div id=“Form-con”> <form id=“form1” onsubmit=“return false” action="##" method=“post”> <input type=“text” name=“username” class=“inputStyle” placeholder=“请输入账号”><br/> <input type=“password” name=“password” class=“inputStyle” placeholder=“请输入密码”><br/> <input type=“submit” class=“btnStyle” value=“登陆” onclick=“LoginUser()"> </div> <div id=“Result”></div> </form></body><!– 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: $(’#form1’).serialize(), success: function (data) { var result=document.getElementById(“Result”); //提交成功 result.innerHTML=data[0].result; if (data[0].result == “登陆成功”) { result.innerHTML=“登陆成功”; }else if (data[0].result == “fail”) { result.innerHTML=“登陆失败，账号或密码错误”; } }, error : function(data) { //提交失败的提示词或者其他反馈代码 var result=document.getElementById(“Result”); result.innerHTML=“连接服务器失败”; } }); } </script></html>LoginUser.php<?phpheader(“Content-type:application/json”);// 注册账号验证$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"}]”; }}?>数据库自增id –id –int(11)用户id –userid – varchar(32)用户名 –username – varchar(32)密码 –password – varchar(32)注册时间 –regtime –timestampdemohttp://www.likeyunba.com/demo…Author：TANKINGweb:http://likeyunba.comWeChat:likeyunba520Date:2019-2-2
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