很多程序中都会有注册用户的功能，当然都会有忘记密码取回这一项，为大家提供一段代码，有需要的朋友，可以看看。
第一步：
复制代码 代码示例:
<!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>根据问题取回密码_www.jb200.com</title>
</head>
<body>
<form action="wangjimima1.php" method="post" name="form1" id="form1">
<table width="40%" border="0" align="center" cellpadding="5" cellspacing="0" class="biaoge">
<tr>
<td height="20" colspan="2" class="danyuange"><div align="center">请输入您的用户名</div></td>
</tr>
<tr>
<td width="24%" height="20" class="left"><div align="center">用户名 </div></td>
<td width="76%" class="danyuange"><div align="center">
<input name="username" type="text" id="username" />
</div></td>
</tr>
<tr>
<td height="20" colspan="2"><div align="center">
<input type="submit" name="Submit" value="下一步" />
<input type="reset" name="Submit" value="取消" />
</div></td>
</tr>
</table>
</form>
</body>
</html>
第二步：
复制代码 代码示例:
<!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>取回密码2</title>
</head>
<body>
<?php
require_once ('conn.php');
$sql = "select * from member where username='$_POST[username]'";
$result =
mysql_query($sql,$conn);
if ($rs =mysql_fetch_array($result)){
?>
<form action="wangjimima2.php" method="post" name="form1" id="form1">
<?php
$sql = "select * from member where username='$_POST[username]'";
$result =mysql_query($sql,$conn);
$rs =mysql_fetch_array($result);
?>
<table width="45%" border="0" align="center" cellpadding="5" cellspacing="0" class="biaoge">
<tr>
<td colspan="2" class="right"><div align="center"><span class="style18">请输入根据提示问题输入问题答案</span></div></td>
</tr>
<tr>
<td width="26%" class="left"><div align="right" class="style15">
<div align="center">用户名</div>
</div></td>
<td width="74%" class="right"><?=$_POST[username]?>
<input name="id" type="hidden" id="id" value="<?=$rs["id"]?>" /></td>
</tr>
<tr>
<td class="left"><div align="right" class="style15">
<div align="center">密码提示</div>
</div></td>
<td class="right"><?=$rs["problem"]?></td>
</tr>
<tr>
<td class="left"><div align="right" class="style16">
<div align="center">问题答案</div>
</div></td>
<td class="right"><input name="answer" type="text" id="answer" /></td>
</tr>
<tr>
<td colspan="2"><div align="left"><input type="submit" name="Submit" value="提交" />
<input type="reset" name="Submit" value="重置" />
</div></td>
</tr>
</table>
</form>
<?php
}else{
echo "<mce:script language=
javascript><!--
";
echo "alert('没有此用户,请确认你所输入的用户名是否正确!');";
echo "javascript:history.go(-1);";
echo "
// --></mce:script>"; //用javascript
脚本提示用户;
}
?>
</body>
</html>
第三步
复制代码 代码示例:
<!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>取回密码3</title>
</head>
<body>
<?php
require_once ('conn.php');
$sql = "select * from member where id=$_POST[id]";
$result =mysql_query($sql,$conn);
$rs =mysql_fetch_array($result);
?>
<br />
<table width="80%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td><div align="center"><span class="style12"><strong>恭喜您,您的密码以找回,请您紧记,切勿忘记!</strong></span></div></td>
</tr>
</table>
<form action="wangjimima2.php" method="post" name="form1" id="form1">
<table width="50%" border="0" align="center" cellpadding="5" cellspacing="0" class="biaoge">
<tr>
<td colspan="2" class="right"><div align="center"><span class="style1 style12">这是您的用户名和密码，请勿忘记！</span></div></td>
</tr>
<tr>
<td width="26%" class="left"><div align="center">用 户 名</div></td>
<td width="74%" class="right">
<?=$rs[username]?></td>
</tr>
<tr>
<td class="left"><div align="center">密 码</div></td>
<td class="right">
<?
if ($_POST["answer"]==$rs["answer"]) {
echo $rs["password"];
session_register("username");
$username=$rs[username];
$aaa=$rs[username];
}else{
echo("<mce:script type='text/javascript'><!--
alert('对不起，您输入的密码提示答案错误!');location.href='wangjimima.php';
// --></mce:script>");
}
?></td>
</tr>
<tr>
<td colspan="2" class="left"><div align="center"><a href="index.php" mce_href="index.php" class="c">返回首页</a></div></td>
</tr>
</table>
</form>
</body>
</html>
