//注册页面<!DOCTYPE html><html><head> <title>注册页</title> <meta charset="utf-8"> <style type="text/css"> *{ margin:0px;padding:0px; } .gray{ width:333px; height:444px; background-color:lightgray; margin:88px auto; border-radius:5px; } table { margin:0px auto; } table caption { margin-top:40px; } </style> <script type="text/javascript"> function checkname(oInput) { var xmlhttp; var span=document.getElementById('s'); var name=document.getElementById('name'); if(oInput.value=="") { span.innerHTML="请输入账号"; span.style.color='red'; name.focus(); return; } if(window.ActiveXObject) { xmlhttp=new ActiveXObject('Microsoft.XMLHTTP'); } else { xmlhttp=new XMLHttpRequest(); } xmlhttp.open('post','checkname.php',true); xmlhttp.onreadystatechange=function() { if(xmlhttp.readyState==4 && xmlhttp.status==200) { var result=xmlhttp.responseText; if(result=='yes') { span.innerHTML=''; } else { span.innerHTML='账号已被注册'; span.style.color='red'; } } } xmlhttp.setRequestHeader('content-type','application/x-www-form-urlencoded'); xmlhttp.send('name='+oInput.value); } </script></head><body> <div class="gray"> <form action="check.php" method="post"> <table> <caption align="center">新用户注册</caption> <tr> <td>用户名</td> </tr> <tr> <td><input type="text" name="name" onblur="checkname(this)" id="name"><span id="s"></span></td> </tr> <tr> <td>密码</td> </tr> <tr> <td><input type="password" name="pwd"></td> </tr> <tr> <td>确认密码</td> </tr> <tr> <td><input type="password" name="repwd"></td> </tr> <tr> <td>电子邮件</td> </tr> <tr> <td><input type="text" name="email"></td> </tr> <tr> <td>个人主页</td> </tr> <tr> <td><input type="text" name="homepage"></td> </tr> <tr> <td colspan="2" align="center"><input type="submit" value="注册" name="btnadd"></td> </tr> </table> </form> </div></body></html>//想用php把注册的信息添加到数据库中<?php header('content-type:text/html;charset=utf-8;'); $name=$_POST['name']; $pwd=md5($_POST['pwd']); $email=$_POST['email']; $homepage=$_POST['homepage']; $pdo=new PDO('mysql:host=localhost;dbname=reg','root','',array(PDO::MYSQL_ATTR_INIT_COMMAND=>"set names 'utf8'")); $sql="select count(userid) from users where name=$name"; $sql2="insert into users values($name,$pwd,$email,$homepage)"; $recordset=$pdo->query($sql); $recordset->setFetchMode(PDO::FETCH_NUM); $result=$recordset->fetch(); print_r($result); if($result[0]>0) { echo 'no'; } else { echo 'yes'; } if($pdo->exec($sql2)) { echo '注册成功'; } else { echo '失败'; } $pdo=null;//总是说我姿势不对，疯了要，觉得程序员每天不是在写代码，是在找错误排查，啊啊啊啊啊w(ﾟДﾟ)w//写了20分钟，哈哈，搞定，运行，错误，然后我就找了一天的错误，到底是哪里错了呢？
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