一个比较完整的登陆和注册后台

 数据库类

conn.php

<?php
class opmysql{
    private $host = 'localhost';            //服务器地址
    private $name = 'root';                    //登录账号
    private $pwd = '123456';                    //登录密码
    private $dBase = 'db_reglog';            //数据库名称
    private $conn = '';                        //数据库链接资源
    private $result = '';                    //结果集
    private $msg = '';                        //返回结果
    private $fields;                        //返回字段
    private $fieldsNum = 0;                    //返回字段数
    private $rowsNum = 0;                    //返回结果数
    private $rowsRst = '';                    //返回单条记录的字段数组
    private $filesArray = array();            //返回字段数组
    private $rowsArray = array();            //返回结果数组
    //初始化类
    function __construct($host='',$name='',$pwd='',$dBase=''){
        if($host != '')
            $this->host = $host;
        if($name != '')
            $this->name = $name;
        if($pwd != '')
            $this->pwd = $pwd;
        if($dBase != '')
            $this->dBase = $dBase;
        $this->init_conn();
    }
    //链接数据库
    function init_conn(){
        $this->conn=@mysql_connect($this->host,$this->name,$this->pwd);
        @mysql_select_db($this->dBase,$this->conn);
        mysql_query("set names gb2312");
    }
    //查询结果
    function mysql_query_rst($sql){
        if($this->conn == ''){
            $this->init_conn();
        }
        $this->result = @mysql_query($sql,$this->conn);
    }
    //取得字段数 
    function getFieldsNum($sql){
        $this->mysql_query_rst($sql);
        $this->fieldsNum = @mysql_num_fields($this->result);
    }
    //取得查询结果数
    function getRowsNum($sql){
        $this->mysql_query_rst($sql);
        if(mysql_errno() == 0){
            return @mysql_num_rows($this->result);
        }else{
            return '';
        }    
    }
    //取得记录数组（单条记录）
    function getRowsRst($sql){
        $this->mysql_query_rst($sql);
        if(mysql_error() == 0){
            $this->rowsRst = mysql_fetch_array($this->result,MYSQL_ASSOC);
            return $this->rowsRst;
        }else{
            return '';
        }
    }
    //取得记录数组（多条记录）
    function getRowsArray($sql){
        $this->mysql_query_rst($sql);
        if(mysql_errno() == 0){
            while($row = mysql_fetch_array($this->result,MYSQL_ASSOC)) {
                $this->rowsArray[] = $row;
            }
            return $this->rowsArray;
        }else{
            return '';
        }
    }
    //更新、删除、添加记录数
    function uidRst($sql){
        if($this->conn == ''){
            $this->init_conn();
        }
        @mysql_query($sql);
        $this->rowsNum = @mysql_affected_rows();
        if(mysql_errno() == 0){
            return $this->rowsNum;
        }else{
            return '';
        }
    }
    //获取对应的字段值
    function getFields($sql,$fields){
        $this->mysql_query_rst($sql);
        if(mysql_errno() == 0){
            if(mysql_num_rows($this->result) > 0){
                $tmpfld = @mysql_fetch_row($this->result);
                $this->fields = $tmpfld[$fields];
                
            }
            return $this->fields;
        }else{
            return '';
        }
    }
    
    //错误信息
    function msg_error(){
        if(mysql_errno() != 0) {
            $this->msg = mysql_error();
        }
        return $this->msg;
    }
    //释放结果集
    function close_rst(){
        mysql_free_result($this->result);
        $this->msg = '';
        $this->fieldsNum = 0;
        $this->rowsNum = 0;
        $this->filesArray = '';
        $this->rowsArray = '';
    }
    //关闭数据库
    function close_conn(){
        $this->close_rst();
        mysql_close($this->conn);
        $this->conn = '';
    }
}
$conne = new opmysql();//新建数据连接源
?>

index.php

实现cookie自动登陆

<?php
    session_start();
    header('Content-Type:text/html;charset=gb2312');
    if(!empty($_COOKIE['name']) and !is_null($_COOKIE['name'])){
        $_SESSION['name'] = $_COOKIE['name'];
        header('location:http://'.$_SERVER['SERVER_NAME'].dirname($_SERVER['SCRIPT_NAME']).'/main.php');
    }else{
        header('location:http://'.$_SERVER['SERVER_NAME'].dirname($_SERVER['SCRIPT_NAME']).'/login.php');
    }
?>

main.php

登陆成功后反馈的信息

<?php
    session_start();
?>
<!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=gb2312" />
<title>登录成功</title>
</head>
<body>
<?php echo '欢迎光临！'.$_SESSION['name']; ?>
</body>
</html>

login.php

登陆界面

<!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=gb2312" />
<title>用户登录</title>
<link rel="stylesheet" type="text/css" href="css/style.css" />
<script language="javascript" src="js/login.js"></script>
<script language="javascript" src="js/xmlhttprequest.js"></script>
</head>
<body>
      用户名<input id="lgname" name="lgname" type="text"/><br>
      密&nbsp;&nbsp;码<input id="lgpwd" name="lgpwd" type="password" /><br>
      验证码<input id="lgchk" type="text" maxlength="4" style="35px;">
      <img id='chkid' src=""/><a id="changea">看不清</a><br>
      <button id="lgbtn" >登陆</button>
      <button id="rgbtn">注册</button>
      <button id="fdbtn">找回密码</button>
      <input id="chknm" name="chknm" type="hidden" value=""  />
</body>
</html>

Ajax初始化

xmlhttprequest.js

var xmlhttp = false;
if (window.XMLHttpRequest) {                                     //Mozilla、Safari等浏览器
    xmlhttp = new XMLHttpRequest();
} 
else if (window.ActiveXObject) {                                 //IE浏览器
    try {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
        try {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
       } catch (e) {}
    }
}

login.js

登陆界面JS

// JavaScript Document
function $(id){
    return document.getElementById(id);
}
window.onload = function(){
    showval();
    $('lgname').focus();
    
    $('lgname').onkeydown = function(){//按回车向下移动光标
        if(event.keyCode == 13){
            $('lgpwd').select();
        }
    }
    $('lgpwd').onkeydown = function(){
        if(event.keyCode == 13){
            $('lgchk').select();
        }
    }
    $('lgchk').onkeydown = function(){
        if(event.keyCode == 13){
             chklg();
        }
    }
    $('lgbtn').onclick = chklg;
    function chklg(){
        if($('lgname').value.match(/^[a-zA-Z_]\w*$/) == null){
            alert('请输入合法名称');
            $('lgname').select();
            return false;
        }
        if($('lgname').value == ''){
            alert('请输入用户名!');
            $('lgname').focus();
            return false;
        }
        if($('lgpwd').value == ''){
            alert('请输入密码!');
            $('lgpwd').focus();
            return false;
        }
        if($('lgchk').value == ''){
            alert('请输入验证码');
            $('lgchk').select();
            return false;
        }
        if($('lgchk').value != $('chknm').value){
            alert('验证码输入错误');
            $('lgchk').select();
            return false;
        }
        //防SQL注入式攻击(
        count = document.cookie.split(';')[0];
        if(count.split('=')[1] >= 3){
            alert('因为您的非法操作，您将无法再执行登录操作');
            return false;
        }
        //)
        //$('regimg').style.visibility = "visible";//显示登陆的进度条
        //Ajax发送与接受(
        url = 'login_chk.php?act='+(Math.random())+'&name='+$('lgname').value+'&pwd='+$('lgpwd').value;
        xmlhttp.open('get',url,true);
        
        xmlhttp.onreadystatechange = function(){
            if(xmlhttp.readyState == 4){
                if(xmlhttp.status == 200){
                    msg = xmlhttp.responseText;
                    if(msg == '0'){
                        alert('您还没有激活，请先登录邮箱进行激活操作。');
                    }else if(msg == '1'){
                        alert('用户名或密码输入错误，您还有2次机会');
                        $('lgpwd').select();
                    }else if(msg == '2'){
                        alert('用户名或密码输入错误，您还有1次机会');
                        $('lgpwd').select();
                    }else if(msg == '3'){
                        alert('因为登录次数过多，您的帐号已被冻结，请联系管理员');
                        $('lgname').select();
                    }else if(msg == '4'){
                        alert('用户名输入错误');
                        $('lgname').select();
                    }else if(msg == '-1'){
                        alert('登录成功');
                        location = 'main.php';
                    }else{
                        alert(msg);
                    }
                    //$('regimg').style.visibility = "hidden";
                }
            }
        }
        xmlhttp.send(null);
    }
    //)
    $('changea').onclick = showval;//刷新验证码
    //生成验证码(
    function showval(){
        num = '';
        for(i=0;i<4;i++){
            tmp =  Math.ceil((Math.random() * 15));
            if(tmp > 9){
                switch(tmp){
                    case(10):
                        num += 'a';
                        break;
                    case(11):
                        num += 'b';
                        break;
                    case(12):
                        num += 'c';
                        break;
                    case(13):
                        num += 'd';
                        break;
                    case(14):
                        num += 'e';
                        break;
                    case(15):
                        num += 'f';
                        break;
                }
            }else{
                num += tmp;
            }
        }
        $('chkid').src='valcode.php?num='+num;
        $('chknm').value = num;
    }
    //)
    $('fdbtn').onclick = function(){
        fd  = window.open('found.php','found','width=300,height=200');//在新窗口中打开
        fd.moveTo(screen.width/2,200);
    }
    $('rgbtn').onclick = function(){
        open('register.php','_parent','',false);//直接打开
    }
}

login_chk.php

Ajax登陆后台验证

<?php
    session_start();
    header('Content-Type:text/html;charset=gb2312');
    include_once 'conn/conn.php';
    $name = addslashes($_GET['name']);
    $pwd = $_GET['pwd'];
    if(!empty($name) and !empty($pwd)){
        $sql = "select name,count,active from tb_member where name = '".$name."'";
        $active = $conne->getFields($sql,2);
        $count = $conne->getFields($sql,1);
        $conne->close_rst();
        if($active == ''){
            if(!isset($_COOKIE['count']) or $_COOKIE['count'] == 0){
                setcookie('count',1);
            }else{
                setcookie('count',$_COOKIE['count']+1);
            }
            $reback = 4;
        }else if($active == 0){//判断用户名是否被激活
            $reback = '0';
        }else if($count >= 3){//判断用户的登陆次数
            $reback = '3';
        }else{
            $sql .= " and password = '".md5($pwd)."'";
            $num = $conne->getRowsNum($sql);
            if($num == 0 or $num == ''){//如果用户名密码错误，登录次数加1
                $num = $conne->uidRst("update tb_member set count = ".($count+1)." where name = '".$name."'");
                $reback = ($count+1);
            }else{//登陆成功，清空count字段值
                if($count != 0){
                    $num = $conne->uidRst("update tb_member set count = 0 where name = '".$name."'");
                }
                //设置COOKIE
                if(isset($_COOKIE['count']) and $_COOKIE['count'] != 0){
                    setcookie('count',0);
                }
                setcookie('name',$name,time()+60*10);
                $_SESSION['name'] = $name;
                $reback = '-1';
            }
        }
    }
    echo $reback;
?>

生成验证码图片

valcode.php

<?php
    //header("content-type:image/png");
    $num = $_GET['num'];
    $imagewidth=60;
    $imageheight=18;

    $numimage = imagecreate($imagewidth,$imageheight);
    imagecolorallocate($numimage,240,240,240);
    for($i=0;$i<strlen($num);$i++){
        $x = mt_rand(1,8)+$imagewidth*$i/4;
        $y = mt_rand(1,$imageheight/4);
        $color=imagecolorallocate($numimage,mt_rand(0,150),mt_rand(0,150),mt_rand(0,150));
        imagestring($numimage,5,$x,$y,$num[$i],$color);
    }

    for($i=0;$i<200;$i++){
          $randcolor=imagecolorallocate($numimage,rand(200,255),rand(200,255),rand(200,255));
          imagesetpixel($numimage,rand()%70,rand()%20,$randcolor); 
    }
    imagepng($numimage);
    imagedestroy($numimage);
?>

注册页面
register.php

<!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=gb2312" />
<title>注册</title>
<link rel="stylesheet" type="text/css" href="css/style.css" />
<script language="javascript" src="js/xmlhttprequest.js"></script>
<script language="javascript" src="js/register.js"></script>
</head>
<body>
<div id="container">
  <div id="rgbgdiv">
    <div id="regnamediv"><b>注册名称：</b>
      <input id="regname" name="regname" type="text" />
      <div id="namediv">请输入用户名</div>
    </div>
    <div id="regpwddiv1"><b>注册密码：</b>
      <input id="regpwd1" name="regpwd1" type="password" />
      <div id="pwddiv1">请输入密码</div>
    </div>
    <div id="regpwddiv2"><b>确认密码：</b>
      <input id="regpwd2" name="regpwd2" type="password" />
      <div id="pwddiv2">请输入确认密码</div>
    </div>
    <div id="regemaildiv"><b>电子邮箱：</b>
      <input id="email" name="email" type="text" />
      <div id="emaildiv">用户激活和找回密码使用</div>
    </div>
    <div id="morediv" style="display:none;">
      <hr id="part" />
      <div id="regquestiondiv"><b>密保问题：</b>
        <input id="question" name="question" type="text" />
        <div id="questiondiv">用户激活和找回密码使用</div>
      </div>
      <div id="reganswerdiv"><b>密保答案：</b>
        <input id="answer" name="answer" type="text" />
        <div id="answerdiv">用户激活和找回密码使用</div>
      </div>
      <div id="regrealnamediv"><b>真实姓名：</b>
        <input id="realname" name="realname" type="text" />
        <div id="realnamediv">用户的真实姓名</div>
      </div>
      <div id="regbirthdaydiv"><b>出生日期：</b>
        <input id="birthday" name="birthday" type="text" />
        <div id="birthdaydiv">用户的出生日期。格式：YYYY-MM-DD</div>
      </div>
      <div id="regtelephonediv"><b>联系电话：</b>
        <input id="telephone" name="telephone" type="text" />
        <div id="telephonediv">用户的联系电话</div>
      </div>
      <div id="regqqdiv"><b>QQ号 码：</b>
        <input id="qq" name="qq" type="text" />
        <div id="qqdiv">用户QQ号</div>
      </div>
    </div>
    <div id="btndiv2">
      <button id="regbtn" disabled="disabled">&nbsp;</button>
      <button id="morebtn">&nbsp;</button>
      <button id="logbtn">&nbsp;</button>
    </div>
  </div>
  <div id="imgdiv" style=" visibility: hidden;">&nbsp;</div>
</div>
</body>
</html>

注册Ajax

register.js

// JavaScript Document
function $(id){
    return document.getElementById(id);
}
window.onload = function(){
    $('regname').focus();
    var cname1,cname2,cpwd1,cpwd2,cemail;
    //设置激活按钮
    function chkreg(){
        if((cname1 == 'yes') && (cname2 == 'yes') && (cpwd1 == 'yes') && (cpwd2 == 'yes') && (cemail == 'yes')){
            $('regbtn').disabled = false;
        }else{
            $('regbtn').disabled = true;
        }
    }
    //验证用户名
    $('regname').onkeyup = function (){
        name = $('regname').value;
        cname2 = '';
        if(name.match(/^[a-zA-Z_]*/) == ''){
            $('namediv').innerHTML = '<font color=red>必须以字母或下划线开头</font>';
            cname1 = '';
        }else if(name.length < 2){
            $('namediv').innerHTML = '<font color=red>注册名称必须大于等于2位</font>';
            cname1 = '';
        }else{
            $('namediv').innerHTML = '<font color=green>注册名称符合标准</font>';
            cname1 = 'yes';
        }
        chkreg();
    }
    //验证是否存在该用户
    $('regname').onblur = function(){
        name = $('regname').value;
        if(cname1 == 'yes'){
            xmlhttp.open('get','chkname.php?name='+name,true);
            xmlhttp.onreadystatechange = function(){
                if(xmlhttp.readyState == 4){
                    if(xmlhttp.status == 200){
                        var msg = xmlhttp.responseText;
                        if(msg == '1'){
                            $('namediv').innerHTML="<font color=green>恭喜您，该用户名可以使用!</font>";
                            cname2 = 'yes';
                        }else if(msg == '2'){
                            $('namediv').innerHTML="<font color=red>用户名被占用！</font>";
                            cname2 = '';
                        }else{
                            $('namediv').innerHTML="<font color=red>"+msg+"</font>";
                            cname2 = '';
                        }
                    }
                }
                chkreg();
            }
            xmlhttp.send(null);
        }
    }
    //验证密码
    $('regpwd1').onkeyup = function(){
        pwd = $('regpwd1').value;
        pwd2 = $('regpwd2').value;
        if(pwd.length < 6){
            $('pwddiv1').innerHTML = '<font color=red>密码长度最少需要6位</font>';
            cpwd1 = '';
        }else if(pwd.length >= 6 && pwd.length < 12){
            $('pwddiv1').innerHTML = '<font color=green>密码符合要求。密码强度：弱</font>';
            cpwd1 = 'yes';
        }else if((pwd.match(/^[0-9]*$/)!=null) || (pwd.match(/^[a-zA-Z]*$/) != null )){
            $('pwddiv1').innerHTML = '<font color=green>密码符合要求。密码强度：中</font>';
            cpwd1 = 'yes';
        }else{
            $('pwddiv1').innerHTML = '<font color=green>密码符合要求。密码强度：高</font>';
            cpwd1 = 'yes';
        }
        if(pwd2 != '' && pwd != pwd2){
            $('pwddiv2').innerHTML = '<font color=red>两次密码不一致!</font>';
            cpwd2 = '';
        }else if(pwd2 != '' && pwd == pwd2){
            $('pwddiv2').innerHTML = '<font color=green>密码输入正确</font>';
            cpwd2 = 'yes';
        }
        chkreg();
    }
    //验证确认密码
    $('regpwd2').onkeyup = function(){
        pwd1 = $('regpwd1').value;
        pwd2 = $('regpwd2').value;
        if(pwd1 != pwd2){
            $('pwddiv2').innerHTML = '<font color=red>两次密码不一致!</font>';
            cpwd2 = '';
        }else{
            $('pwddiv2').innerHTML = '<font color=green>密码输入正确</font>';
            cpwd2 = 'yes';
            chkreg();
        }
    }
    //验证email
    $('email').onkeyup = function(){
        emailreg = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
        $('email').value.match(emailreg);
        if($('email').value.match(emailreg) == null){
            $('emaildiv').innerHTML = '<font color=red>错误的email格式</font>';
            cemail = '';
        }else{
            $('emaildiv').innerHTML = '<font color=green>输入正确</font>';
            cemail = 'yes';
        }
        chkreg();
    }

    //显示/隐藏详细信息
    $('morebtn').onclick = function(){
        
        if($('morediv').style.display == ''){
            $('morediv').style.display = 'none';
        }else{
            $('morediv').style.display = '';
        }
    }
    //登录按钮
    $('logbtn').onclick = function(){
        window.open('login.php','_parent','',false);
    }
    //正式注册
    $('regbtn').onclick = function(){
        $('imgdiv').style.visibility = 'visible';
        url = 'register_chk.php?name='+$('regname').value+'&pwd='+$('regpwd1').value+'&email='+$('email').value;
        url += '&question=' +$('question').value+'&answer='+$('answer').value;
        url += '&realname=' +$('realname').value+'&birthday='+$('birthday').value;
        url += '&telephone='+$('telephone').value+'&qq='+$('qq').value;
        xmlhttp.open('get',url,true);
        xmlhttp.onreadystatechange = function(){
            if(xmlhttp.readyState == 4){
                if(xmlhttp.status == 200){
                    msg = xmlhttp.responseText;
                    if(msg == '1'){
                        alert('注册成功，请到您的邮箱中获取激活码！');
                        location='index.php';
                    }else if(msg == '-1'){
                        alert('您的服务器不支持Zend_mail，或者邮箱填写错误。请仔细检查！！');
                    }else{
                        alert(msg);
                    }
                    $('imgdiv').style.visibility = 'hidden';
                }
            }
        }
        xmlhttp.send(null);
    }
}

注册后台处理，发送验证邮件需要下载Zend Framework

register_chk.php

<?php
    include_once 'conn/conn.php';
    require_once 'Zend/Mail.php';                        //调用发送邮件的文件
    require_once 'Zend/Mail/Transport/Smtp.php';        //调用SMTP验证文件
    $reback = '0';
    $url = 'http://'.$_SERVER['SERVER_NAME'].dirname($_SERVER['SCRIPT_NAME']).'/activation.php';
    $url .= '?name='.trim($_GET['name']).'&pwd='.md5(trim($_GET['pwd']));
    
    //发送激活邮件
    $subject="激活码的获取";
    $mailbody='注册成功。您的激活码是：'.'<a href="'.$url.'" target="_blank">'.$url.'</a><br>'.'请点击该地址，激活您的用户！';
//定义邮件内容
    $envelope="mrsoft8888@sohu.com";        //定义登录使用的邮箱

    $config = array('auth' => 'login',
            'username' => 'mrsoft8888',
            'password' => 'mrsoft8888');                //定义SMTP的验证参数
    $transport = new Zend_Mail_Transport_Smtp('smtp.sohu.com', $config);        //实例化验证的对象
    $mail = new Zend_Mail('GBK');            //实例化发送邮件对象
    $mail->setBodyHtml($mailbody);                //发送邮件主体
    $mail->setFrom($envelope, '明日科技典型模块程序测试邮箱，恭喜您用户注册成功！');    //定义邮件发送使用的邮箱
    $mail->addTo($_GET['email'], '获取用户注册激活码');        //定义邮件的接收邮箱
    $mail->setSubject('获取注册用户的激活码');                //定义邮件主题
    $mail->send($transport);                                //执行发送操作
    
/*   网络版发送邮件方法  */    
    $birthday='0000-00-00';
    if($_GET['birthday']!='')
        $birthday=$_GET['birthday'];
    $sql = "insert into tb_member(name,password,question,answer,email,realname,birthday,telephone,qq) values('".trim($_GET['name'])."','".md5(trim($_GET['pwd']))."','".$_GET['question']."','".$_GET['answer']."','".$_GET['email']."','".$_GET['realname']."','".$birthday."','".$_GET['telephone']."','".$_GET['qq']."')";
        $num = $conne->uidRst($sql);
        if($num == 1){
            $reback = '1';
        }
    echo $reback;
?>

验证用户名是否被占用

chkname.php

<?php
include_once "conn/conn.php";
$sql = "select * from tb_member where name='".$_GET['name']."'";
$num = $conne->getRowsNum($sql);
if($num == 1){
    echo '2';
}else if($num == 0){
    echo '1';
}else{
    echo $conne->msg_error();
}
?>

找回密码的页面
found.php

<!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=gb2312" />
<title>找回密码</title>
<link rel="stylesheet" href="css/style.css" />
<script language="javascript" src="js/found.js"></script>
<script language="javascript" src="js/xmlhttprequest.js"></script>
</head>
<body>
<div id="fdbgdiv" >
    <div id="top">&nbsp;>>密码找回</div>
    <div id="foundnamediv">找回账号： <input id="foundname" type="text" style="  100px; height:15px; border:1px #000000 solid;" /></div>
    <div id="foundnamediv">密保问题： <input id="fdquestion" type="text" style="  100px; height:15px; border:1px #000000 solid;" /></div>
  <div id="foundnamediv">密保答案： <input id="fdanswer" type="text" style="  100px; height:15px; border:1px #000000 solid;" /></div>
  <div id="foundnamediv" align="center"><button id="step1"></button></div>
</div>
</body>
</html>

找回密码的Ajax

found.js

// JavaScript Document
function $(id){
    return document.getElementById(id);
}
window.onload = function(){
    $('foundname').focus();
    $('step1').onclick = function(){
        if($('foundname').value != '' && $('fdquestion').value != '' && $('fdanswer').value != ''){
            xmlhttp.open('get','found_chk.php?foundname='+$('foundname').value+'&question='+$('fdquestion').value+'&answer='+$('fdanswer').value,true);
            xmlhttp.onreadystatechange = function(){
                if(xmlhttp.readyState == 4 && xmlhttp.status == 200){
                    msg = xmlhttp.responseText;
                    if(msg == '1'){
                        alert('找回密码成功，请登录邮箱注册邮箱!');
                        window.close();
                    }else{
                        alert('填写的信息错误');
                    }
                }
            }
            xmlhttp.send(null);
        }else{
            alert('请填写完成信息');
            $('foundname').focus();
            return false;
        }
    }
}

found_chk.php

找回密码的后台，发送包含密码的邮件，与注册时类似

<?php
    include_once 'conn/conn.php';
    require_once 'Zend/Mail.php';                        //调用发送邮件的文件
    require_once 'Zend/Mail/Transport/Smtp.php';        //调用SMTP验证文件
    $reback = '0';
    $name = $_GET['foundname'];
    $question = $_GET['question'];
    $answer = $_GET['answer'];
    $sql = "select email from tb_member where name = '".$name."' and question = '".$question."' and answer = '".$answer."'";
    $email = $conne->getFields($sql,0);
    if($email != '')
    {
        $rnd = rand(1000,time());
        $sql = "update tb_member set password = '".md5($rnd)."' where name = '".$name."' and question = '".$question."' and answer = '".$answer."'";
        $tmpnum = $conne->uidRst($sql);
        if($tmpnum >= 1)
        {
            $subject="找回密码";
            $mailbody='密码找回成功。您帐号的新密码是'.$rnd;
            $reback='1';
            $envelope="mrsoft8888@sohu.com";
            $config = array('auth' => 'login',
            'username' => 'mrsoft8888',
            'password' => 'mrsoft8888');                //定义SMTP的验证参数
            $transport = new Zend_Mail_Transport_Smtp('smtp.sohu.com', $config);        //实例化验证的对象
            $mail = new Zend_Mail('GBK');            //实例化发送邮件对象
            $mail->setBodyHtml($mailbody);                //发送邮件主体
            $mail->setFrom($envelope, '明日科技典型模块程序测试邮箱，修改用户注册密码！');    //定义邮件发送使用的邮箱
            $mail->addTo($email, '获取用户新密码');        //定义邮件的接收邮箱
            $mail->setSubject($subject);                //定义邮件主题
            $mail->send($transport);    
        }
        else
        {
            $reback = $sql;
        }
    }
    echo $reback;
?>

利用邮件的超链接激活页面

activation.php

<?php
session_start();
header('Content-Type:text/html;charset=gb2312');
include_once("conn/conn.php");
if (!empty($_GET['name']) && !is_null($_GET['name'])){                //激活注册用户
    $num=$conne->getRowsNum("select * from tb_member where name='".$_GET['name']."' and password = '".$_GET['pwd']."'");
    if ($num>0){
        $upnum=$conne->uidRst("update tb_member set active = 1 where name='".$_GET['name']."' and password = '".$_GET['pwd']."'");
        if($upnum > 0){
            $_SESSION['name'] = $_GET['name'];
            echo "<script>alert('用户激活成功！');window.location.href='main.php';</script>";
        }else{
            echo "<script>alert('您已经激活！');window.location.href='main.php';</script>";
        }
        
    }else{
        echo "<script>alert('用户激活失败！');window.location.href='register.php';</script>";
    }
}
?>

------------修改自<<PHP开发典型模块大全>>-------------------