每日总结4.8

<?php
session_start();
include_once 'conn.php';
$addnew=$_POST["addnew"];
if($addnew=="1")
{
$username=$_POST['username'];
$pwd=$_POST['xmm1'];
$pwdy=$_POST['ymm'];
$sql="select * from allusers where username='".$_SESSION['username']."'";
$query=mysql_query($sql);
$rowscount=mysql_num_rows($query);
if($rowscount>0)
{
if(mysql_result($query,0,"pwd")==$pwdy)
{
$sql="update allusers set pwd='$pwd' where username='".$_SESSION['username']."'";
$query=mysql_query($sql);
echo "<script language='javascript'>alert('修改成功!');history.back();</script>";
}
else
{
echo "<script language='javascript'>alert('对不起,原密码不正确!');history.back();</script>";
}
}
else
{
echo "<script language='javascript'>alert('对不起,原密码不正确!');history.back();</script>";
}
}
?>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>修改密码</title>
</head>
<script>
function check()
{
if(document.form1.ymm.value=="")
{
alert("请输入原密码");
document.form1.ymm.focus();
return false;
}
if(document.form1.xmm1.value=="")
{
alert("请输入新密码");
document.form1.xmm1.focus();
return false;
}
if(document.form1.xmm2.value=="")
{
alert("请输入确认密码");
document.form1.xmm2.focus();
return false;
}
if (document.form1.xmm1.value!=document.form1.xmm2.value)
{
alert("对不起,两次密码不一至,请重新输入");
document.form1.xmm1.value="";
document.form1.xmm2.value="";
document.form1.xmm1.focus();
return false;
}
}

</script>
<body>

<form id="form1" name="form1" method="post" action="mod.php">
<table width="41%" height="126" border="1" align="center" cellpadding="0" cellspacing="0" bordercolor="9DC9FF" style="border-collapse:collapse">
<tr>
<td colspan="2"><div align="center">修改密码</div></td>
</tr>
<tr>
<td>原密码:</td>
<td><input name="ymm" type="text" id="ymm" />
<input name="addnew" type="hidden" id="addnew" value="1"></td>
</tr>
<tr>
<td>新密码:</td>
<td><input name="xmm1" type="password" id="xmm1" /></td>
</tr>
<tr>
<td>确认密码:</td>
<td><input name="xmm2" type="password" id="xmm2" /></td>
</tr>
<tr>
<td><input type="submit" name="Submit" value="确定" onClick="return check()" /></td>
<td><input type="reset" name="Submit2" value="重置" /></td>
</tr>
</table>
</form>
</body>
</html>

原文地址:https://www.cnblogs.com/wanghaoning/p/14915445.html