菜鸟写的留言板登陆代码各位大神帮我看看,为什么要点击登陆两次才能登陆,为什么要点击两次退出才能退出?问题出在哪里,大神帮我看看,先谢谢你了。代码如下:
<?php
include("Sql.php");
if ($_GET[out])
{
setcookie("cookie","out");
echo "<script language=\"javascript\">localhost.href='login.php';</script>";
}
if ($_POST[id]=='xxx')
{
$pw=md5($_POST[pw]);
if($pw=='e1bfd762321e409cee4ac0b6e841963c')
{
setcookie("cookie","ok");
echo "<script language=\"javascript\">localhost.href='login.php';</script>";
}
}
include("Head.php");
if ($_COOKIE['cookie']!='ok'){
?><SCRIPT language=javascript>
function Checklogin()
{
if (myform.id.value=="")
{
alert ("请填写登陆名");
myform.id.focus();
return false;
}
if (myform.pw.value=="")
{
alert ("密码不能为空");
myform.pw.focus();
return false;
}
}
</SCRIPT> <form action="" method="post" name="myform" onsubmit="return Checklogin();">
ID:<input type="text" name="id" ><br>
PW:<input type="password" name="pw"> <input type="submit" name="submit" value="登陆" >
</form>
<?
}else{
?>
<a href='?out=login'>退出</a>
<?
}
?>PHP菜鸟写的代码
<?php
include("Sql.php");
if ($_GET[out])
{
setcookie("cookie","out");
echo "<script language=\"javascript\">localhost.href='login.php';</script>";
}
if ($_POST[id]=='xxx')
{
$pw=md5($_POST[pw]);
if($pw=='e1bfd762321e409cee4ac0b6e841963c')
{
setcookie("cookie","ok");
echo "<script language=\"javascript\">localhost.href='login.php';</script>";
}
}
include("Head.php");
if ($_COOKIE['cookie']!='ok'){
?><SCRIPT language=javascript>
function Checklogin()
{
if (myform.id.value=="")
{
alert ("请填写登陆名");
myform.id.focus();
return false;
}
if (myform.pw.value=="")
{
alert ("密码不能为空");
myform.pw.focus();
return false;
}
}
</SCRIPT> <form action="" method="post" name="myform" onsubmit="return Checklogin();">
ID:<input type="text" name="id" ><br>
PW:<input type="password" name="pw"> <input type="submit" name="submit" value="登陆" >
</form>
<?
}else{
?>
<a href='?out=login'>退出</a>
<?
}
?>PHP菜鸟写的代码
但不能排除是 sql.php 或 head.php 中的问题
/*CREATE TABLE `message` (
`id` tinyint(1) NOT NULL auto_increment,
`user` varchar(25) NOT NULL,
`title` varchar(50) NOT NULL,
`content` tinytext NOT NULL,
`lastdate` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk AUTO_INCREMENT=1 ;*/
$conn=mysql_connect("localhost","root","") or die ("数据库错误");
mysql_select_db("bbs",$conn);
mysql_query("set names 'GBK'"); //中文编码
function htmtocode($content)
{
$content = str_replace("\n","<br>",str_replace(" "," ",$content));
return $content;
}
//把输入的空格跟换行用str_replace("\n","<br>",str_replace(" "," ",$content))替换成PHP能接受的格式,实现输入什么格式就显示什么格式.
?>
Head.php文件代码:
<head>
<meta http-equiv="Content-Type" content="text/html";charset="gb2312">
<title></title>
<link href="images/css.css" rel="stylesheet" type="text/css">
<b><a href="Textbook.php">添加留言</a> | <a href="List.php">浏览留言</a> | <a href="login.php">登陆</a> </b>
<hr size=1>
Textbook.php文件代码:
<?php
include("Sql.php");
//if ($_POST['submit'])
if (isset($_POST['submit'])) //注一定用(isset($_POST['submit']))因为它是判断 submit的数据提交没有.
{
$sql="insert into message(id,user,title,content,lastdate)values('','$_POST[user]','$_POST[title]','$_POST[content]',now())";
mysql_query($sql);
echo "<script language=\"javascript\">alert('添加成功');history.go(-1)</script>";
}
include("Head.php");
?>
<SCRIPT language=javascript>
function CheckPost()
{
if (myform.user.value=="")
{
alert("用户名不能这空,请填写用户名");
myform.user.focus();
return false;
}
if (myform.title.value.length<5)
{
alert("标题不能少于5个字符");
myform.title.focus();
return false;
}
if (myform.content.value.length<8)
{
alert("内容不能少于8个字节");
myform.content.focus();
return false;
}
}
</SCRIPT><form action="Textbook.php" method="post" name="myform" onsubmit="return CheckPost();">
<!--注:这里的action="Textbook.php"是定就是当前的文件名-->
用户:<input type="text" size="10" name="user"><br>
标题:<input type="text" name="title"><br>
留言内容:<br>
<textarea name="content" rows=20 cols=30></textarea><br>
<input type="submit" name="submit" value="提交留言">
</form>
List.php文件代码:
<?
include("Sql.php");
include("Head.php");
$sql="SELECT * from message order by id desc"; //order by id desc 倒序排列
$query=mysql_query($sql);
while($row=mysql_fetch_array($query))
{
?>
<table width=500 border="1" align="center" cellpadding="5" cellspacing="2" bgcolor="#add3ef">
<tr bgcolor="#eff3ff">
<td bgcolor ="eee3ff">ID序列:<?=$row[id]?></td> <td bgcolor ="eff3ff">标题:<?=$row[title]?></td> <td bgcolor ="#aeeffc">用户:<?=$row[user]?></td> <td bgcolor ="#ffffff">内容:<? echo htmtocode($row[content]);?></td>
</tr>
</table>
<?
}
?>
改成 setcookie("cookie","out",time()-3600);-------------
setcookie("cookie","ok");
改成
setcookie("cookie","ok",time()+3600);
setcookie("cookie","out",time()-3600);
echo "<script language=\"javascript\">localhost.href='login.php';</script>";
}
if ($_POST[id]=='xxx')
{
$pw=md5($_POST[pw]);
if($pw=='e1bfd762321e409cee4ac0b6e841963c')
{
setcookie("cookie","ok",time()+3600);
echo "<script language=\"javascript\">localhost.href='login.php';</script>";
}
}
你是对的 确实是location.href 真感谢你啊。真个高人。