$('button').on('click',function(){;var booluser =  $('#data input')[0].value.length >= 8;var     boolpwd = $('#data input')[1].value.length >= 6  ;var boolpwd1 = $('#data input')[1].value == $('#data input')[2].value ;var retel =/^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$/g; var booltel = retel.test($('#data input')[3].value);var reemail = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/g ;var boolemail = reemail.test($('#data input')[4].value);            //这里应该嵌套使if的,但是不是实际开发,这么写便于代码观看if(!booluser){console.log('user:不能少于8位');}if(!boolpwd){console.log('pwd:不能少于6位');}if(!boolpwd1){console.log('pwd1:两次输入密码不一致');}if(!booltel){console.log('tel:请输入正确的电话号');}if(!boolemail){console.log('email:请输入正确的邮箱格式');}

if(booluser && boolpwd && boolpwd1 && booltel && boolemail){                $.ajax({type:"get",                  url:"reg.php",async:true,data:{user:$('#data input')[0].value,pwd:$('#data input')[1].value,tel:$('#data input')[3].value,email:$('#data input')[4].value},success : function(data){console.log(data);}});}})

<?php
var_dump($_GET);
$user = $_GET['user'];
$pwd = $_GET['pwd'];
$tel = $_GET['tel'];
$email = $_GET['email'];
$msg = '';
header('Content-type:text/html;charset=utf8');$adders = "mysql:host=localhost;dbname=Users;";$db = new PDO($adders,"root");$db->exec('set names utf8');   //链接数据库,创建表$result = $db->exec('create table if not exists ajaxreg(user varchar(100) primary key,pwd varchar(100),tel varchar(30),email varchar(30)) default charset=utf8');$resulttel = $db->query("select tel from ajaxreg ");$resulttel->setFetchMode(PDO::FETCH_ASSOC);$arr = $resulttel->fetchAll();foreach($arr as $ar){if( $ar['tel'] == $tel){$msg = "您输入的手机号已经存在";echo $msg;       //如果手机号已存在,终止整个程序die();}}         //如果手机号不存在执行下面代码$result = $db->exec("insert into ajaxreg values('$user','$pwd','$tel','$email')");if($result){$msg = "注册成功";}else{$msg = "用户名已存在";}echo $msg;$db->close();
?>