duangang2825 2013-07-25 07:50
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警告:无法修改标头信息 - 已经由(输出)发送的标头[重复]

This question already has an answer here:

I'm getting this error again and again i try everything but i can't found solution

Warning: Cannot modify header information - headers already sent by (output started at /home/xxxx/xxxx/forum/index.php:90) in /home/pappu/public_html/forum/index.php on line 93

here is my index.php code

<?php
include_once("connect.php");
session_start();
?>
<html>
<head>
<title>MyForum</title>
<style type="text/css">
body {
background-color: #333;
margin-top: 150px;
margin-right: 0px;
margin-bottom: 0px;
margin-left: 0px;
}
.content {
background-color: #666;
width: 960px;
margin-right: auto;
margin-left: auto;
border-radius: 3px;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
padding: 20px;
}
.content .categories {
width: 700px;
background-color: #333;
border-radius: 3px;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
margin: 0px;
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
color: #FFF;
}
.categories .community_heading {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
font-variant: normal;
text-transform: capitalize;
color: #CCC;
margin: 0px;
padding-top: 7px;
padding-right: 7px;
padding-bottom: 7px;
padding-left: 14px;
font-size: 18px;
font-weight: bold;
}
.content .categories hr {
background-color: #666;
height: 3px;
border: 0px;
width: 700px;
margin: 0px;
}

.content .categories .cat_links {
border-bottom-width: thin;
border-bottom-style: solid;
border-bottom-color: #000;
padding-top: 7px;
padding-right: 7px;
padding-bottom: 7px;
padding-left: 14px;
font-size: 14px;
color: #000;
}
.content .categories .cat_a {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
font-size: 18px;
font-variant: normal;
text-transform: capitalize;
color: #777;
text-decoration: none;
}
.content .categories .cat_a:hover {
text-decoration: underline;
color: #DDD;
}
.content .categories .desc {
margin: 0px;
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
font-size: 12px;
font-weight: bold;
color: #CCC;
}
</style>
</head>
<body>
<?php
if(!isset($_SESSION['password']))
{
include_once("Location:header.php");
}
else
{
header("Location:member.php");
}
?>
<div class="content">
<div class="categories">
<h3 class="community_heading">Community</h3>
<hr />
<?php
$query = "SELECT * FROM categories ORDER BY cat_id ASC";
$result = mysql_query($query) or die(mysql_error());
$categories = "";
if(mysql_num_rows($result) > 0 )
{
while($row = mysql_fetch_array($result))
{
$cat_id = $row['cat_id'];
$cat_title = $row['cat_title'];
$cat_desc = $row['cat_description'];
$categories .="
<div class='cat_links'>
<a href='view_category?cid=".$cat_id."' class='cat_a'>$cat_title</a>
<p class='desc'>$cat_desc</p>
</div>";
}
echo $categories ;
}
else 
{
}
?>
</div>
</div>
</body>
</html>
</div>

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1条回答 默认 最新

  • dtvp3625 2013-07-25 07:53
    关注

    You can't call Header() after including ANY code that is outputted to the page. You need to rewrite what you are doing so the Header() call is above all the HTML code.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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