我先建立了个页面，用户登录，中间需要进行用户名和密码登陆，同时希望当登陆正确的话，则建立cookie，否则不建立cookie。请问要怎么弄？登陆页面如下
/*此处建立cookie没有生一点效 <?php
session_start();
if ($_GET[out])
{
unset($_SESSION[user]);
unset($_SESSION[password]);
}
if($_GET[user]&&$_GET[pw])
{
$_SESSION[user]=$_GET[user];
$_SESSION[password]=$_GET[pw];
}
if($_SESSION[user]&&$_SESSION[password])
{
echo "登陆成功<br>用户名：".$_SESSION[user]."<br>密 码：".$_SESSION[password];
echo "<br><a href='new.php?out=out'>退出</a>";
}
?> */
<html>
<head>
<title>ajax</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<script language="javascript">
function showhint()
{ var str1=document.form.user.value;
var str2=document.form.pw.value;
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (str1.length<1)
{ alert ("no user");
return false;}
if (str2.length<1)
{
alert ("no password");
return false;
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4&&xmlhttp.status==200)
{
if(xmlhttp.responseText == '0'){alert("用户名不存在或密码错误！");}else{
document.getElementById("txt").innerHTML=xmlhttp.responseText;}
}
}
xmlhttp.open("GET","intosql2.php?q="+str1+"&w="+str2,true);//alert("intosql2.php?q="+str1+"&w="+str2);
xmlhttp.send();
}
</script>
</head>
<body><span id="txt">
<form name="form" method="post" >
<table width="200" border="0" cellspacing="0" cellpadding="0" bordercolor="red">
<tr>
<td width="117">用户名:
<input type="text" name="user" maxlength="20" size="15"> </td>
<td width="46" rowspan="2">
<input name="submit" type="button" onclick="showhint()" style="font-size:24px;height:50px;width:70px" value="登陆"> </td>
</tr>
<tr>
<td>密码:
<input type="password" name="pw" maxlength="20" size="15"> </td>
</tr>
<tr>
<td colspan="2"><a href="pw_out.php">忘记密码？</a> <a href="register.php">注册新用户</a></td>
</tr>
</table>
</form></span>
</body>
</html>后台验证页面intosql2.php<?php
header("content-type:text/html; charset=gb2312");
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}mysql_select_db("clint", $con);
$sql=mysql_query("select * from clint where name='$_GET[q]'");
$row=mysql_fetch_array($sql);
if ($row[password]==$_GET["w"])
{
echo "<font size=2 color=green>login ok！</font>";
}
else
{
echo '0' ;
}
mysql_close($con);
function gbkToUtf8 ($value) {
return iconv("gb2312", "UTF-8", $value);
}
?>
/*此处建立cookie没有生一点效 <?php
session_start();
if ($_GET[out])
{
unset($_SESSION[user]);
unset($_SESSION[password]);
}
if($_GET[user]&&$_GET[pw])
{
$_SESSION[user]=$_GET[user];
$_SESSION[password]=$_GET[pw];
}
if($_SESSION[user]&&$_SESSION[password])
{
echo "登陆成功<br>用户名：".$_SESSION[user]."<br>密 码：".$_SESSION[password];
echo "<br><a href='new.php?out=out'>退出</a>";
}
?> */
<html>
<head>
<title>ajax</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<script language="javascript">
function showhint()
{ var str1=document.form.user.value;
var str2=document.form.pw.value;
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (str1.length<1)
{ alert ("no user");
return false;}
if (str2.length<1)
{
alert ("no password");
return false;
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4&&xmlhttp.status==200)
{
if(xmlhttp.responseText == '0'){alert("用户名不存在或密码错误！");}else{
document.getElementById("txt").innerHTML=xmlhttp.responseText;}
}
}
xmlhttp.open("GET","intosql2.php?q="+str1+"&w="+str2,true);//alert("intosql2.php?q="+str1+"&w="+str2);
xmlhttp.send();
}
</script>
</head>
<body><span id="txt">
<form name="form" method="post" >
<table width="200" border="0" cellspacing="0" cellpadding="0" bordercolor="red">
<tr>
<td width="117">用户名:
<input type="text" name="user" maxlength="20" size="15"> </td>
<td width="46" rowspan="2">
<input name="submit" type="button" onclick="showhint()" style="font-size:24px;height:50px;width:70px" value="登陆"> </td>
</tr>
<tr>
<td>密码:
<input type="password" name="pw" maxlength="20" size="15"> </td>
</tr>
<tr>
<td colspan="2"><a href="pw_out.php">忘记密码？</a> <a href="register.php">注册新用户</a></td>
</tr>
</table>
</form></span>
</body>
</html>后台验证页面intosql2.php<?php
header("content-type:text/html; charset=gb2312");
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}mysql_select_db("clint", $con);
$sql=mysql_query("select * from clint where name='$_GET[q]'");
$row=mysql_fetch_array($sql);
if ($row[password]==$_GET["w"])
{
echo "<font size=2 color=green>login ok！</font>";
}
else
{
echo '0' ;
}
mysql_close($con);
function gbkToUtf8 ($value) {
return iconv("gb2312", "UTF-8", $value);
}
?>
其他类似
还有你的这是session而不是cookie，汗一个先