注册页面用php来验证用户名是否存在。


PHP #注册2012-07-13 14:04

reg.php的代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
 <link rel="stylesheet" type="text/css" href="css/int.css" />
 <script type="text/javascript" src="js/func.js"></script>
 <style type="text/css">
 td{
     height:30px;
     vertical-align:middle;
     align:center;
 }
 #myText{
  width:600px;
 }
 </style>
 <title>注册页面http://yige.org</title>
 </head>
 
 <body >
 
 <?php
 error_reporting(0);
 //不让PHP报告有错语发生。如果不关闭好有类似这的错语 Warning: preg_match() 关闭就不出现了
 session_start();
 header("Cache-control: private");
 
 $conn = @ mysql_connect("localhost","root","")or die("数据库连接错误");
 mysql_select_db("bbs",$conn);
 mysql_query("set names utf8");
 
 if($_POST['submit'])
 {   
     $username = $_POST["username"];
     
     $sql="select userName  from user_info where userName='$username'";
  //   echo $sql;
     
     $query=mysql_query($sql);
     $rows = mysql_num_rows($query);
     if($rows > 0){
          echo "<script type='text/javascript'>alert('用户名已存在');location='javascript:history.back()';</script>";
     }else{
         $user_in = "insert into user_info (username,pass,sex,qq,email,img) values ('$_POST[username]',md5('$_POST[pass]'),'$_POST[sex]','$_POST[qq]','$_POST[email]','$_POST[img_select]')";        
         //echo $user_in;
         mysql_query($user_in);
         echo "<script type='text/javascript'>alert('写入成功!!');location.href='login.php';</script>";
        
     }
 
 //javascript:history.go(-1)
     
 }
 ?>
 
 
 <form  action="reg.php" name="reg_form" method="post" onsubmit="return check_reg()">
 <table name="reg_table" align="left">
 <tr>
     <td>用户:</td><td><input id="username" name="username" class="myText" type="text" maxlength="12" /></td>
 </tr>
 
 <tr> <!--性别:0 保密 1 女 2 男-->
      <td > 性别:</td>
      <td>女<input type="radio" value="1" name="sex"/>
          男<input type="radio" value="2" name="sex" />
        保密<input type="radio" value="0" name="sex"  checked/></td>
 </tr>
 
 <tr>
     <td>密码:</td><td><input name="pass" class="myText" type="password" onblur="check_len(this)"/><span id="show_pass" style="color:red;"></span></td>
 </tr>
 
 <tr>
     <td>重复密码:</td><td><input name="repass" class="myText" type="password" onblur="check_pass(this)" /><span id="show_repass" style="color:red;"></span></td>
 </tr>
 
 <tr>
     <td>QQ:</td><td><input type="text" class="myText"  name="qq" onblur="check_qq(this)"/><span style="color:red;" id="show_qq"></span></td>
 </tr>
 
 <tr>
     <td>邮箱:</td><td><input type="text" class="myText" name="email"  onblur="check_email(this)"/><span id="show_e" style="color:red;"></span></td>
 </tr>
 
 <tr>
     <td height="60">头像:</td>
     <td>
     <select name="img_select" onchange="img_change(this)">
         <option value="101" >女 001</option>
         <option value="102" >女 002</option>
         <option value="103" >女 003</option>
         <option value="104" >女 004</option>
         <option value="105" >男 001</option>
         <option value="106" >男 002</option>
         <option value="107" >男 003</option>
         <option value="108" >男 004</option>
      </select>
      <img src="/bbs/img/101.gif" id="tx_change" style="width:50px; height:65px;" alt=""/>
     </td>
 </tr>
 
 <tr height="20" align="justify">
     <td align="right" ><input type="submit" value="注册" name="submit" style="margin-right:5px;"/></td>
     <td><input type="reset"  value="重置" name="reset" style="margin-left:5px;"/></td>
 </tr>
 
 <tr>
     <td  colspan="2">我已有账号现在<a href="login.php">登录</a></td>
 </tr>
 
 </table>
 </form>
 </body>
 </html>
fun.js的代码如下:

//根据下拉框变换图片
 function img_change(thisObj){
     var imgsrc = "/bbs/img/"+ thisObj.value+".gif";
     document.getElementById("tx_change").src=imgsrc;    
 }
 
 //检查是否都符合 注册 要求
 function check_reg()
 {
 if(check_len() && check_pass() && check_email() && check_qq())
 {
     return true;    
 }else{
     return false;
     }
 }
 
 //检查密码长度不能少于6
 function check_len(thisObj){
     if(thisObj.value.length==0)
     {
         document.getElementById('show_pass').innerHTML="密码不能为空";
         return false;
     }else{
     if (thisObj.value.length<6)
     {
         document.getElementById('show_pass').innerHTML="密码长度不少于6";
         return false;
     }
         document.getElementById('show_pass').innerHTML="";    
         return true;
       }
 }
 
 //检查俩次密码输入是否一致
 function check_pass(thisObj){
     var psw=document.getElementById('pass');
     if(psw.value.length==0)
     {
         document.getElementById('show_pass').innerHTML="密码不能为空";
         return false;
     }else{
         document.getElementById('show_pass').innerHTML="";    
 
     if (thisObj.value!=psw.value)
     {
         document.getElementById('show_repass').innerHTML="两次密码输入不正确";
         return false;
     }
         document.getElementById('show_repass').innerHTML="";
         return true;
     }
 }
 
 //检查email是否正确
 function check_email(thisObj){
     var reg=/^([a-zA-Z\d][a-zA-Z0-9_]+@[a-zA-Z\d]+(\.[a-zA-Z\d]+)+)$/gi;    
     var rzt=thisObj.value.match(reg);
     if(thisObj.value.length==0){
         document.getElementById('show_e').innerHTML="Email不能为空";
         return false;
         }else{
     if (rzt==null)
     {
         document.getElementById('show_e').innerHTML="Email地址不正确";
         return false;
     }
         document.getElementById('show_e').innerHTML="";
         return true;
   }
 
 }
 
 //检查qq格式是否正确
 function check_qq(thisObj){
     var qq=document.getElementById('qq').value;
     var reg=/^\d+$/;
     if(qq.search(reg))
     {
         document.getElementById('show_qq').innerHTML=" QQ 只能为数字";
         return false;
     }else{
         document.getElementById('show_qq').innerHTML="";
         return true ;
         }
     
     
 }


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