headers already sent problem

[woodplease]

I'm adding a login page to my website. When I go to the login page, and try to login, I keep getting the error

"Warning: Cannot modify header information - headers already sent by (output started at C:\Users\me\Desktop\xampp\htdocs\site\login.php:7) in C:\Users\me\Desktop\xampp\htdocs\site\login.php on line 38"

 

and I don't know why. I've looked into it, and from what I can tell its something to do with white spaces, but I cant find them.

 

<?php
include "./dbconnect.php";
?>
<?php
forum_connect();
?>
<?php
if(isset($_COOKIE['ID_forum'])) 
{ 
$username = $_COOKIE['ID_forum']; 
$pass = $_COOKIE['Key_forum']; 
$check = mysql_query("SELECT * FROM users WHERE username = '$username'")or die(mysql_error()); 
while($info = mysql_fetch_array( $check )) 
{ 
if ($pass != $info['password']) 
{ 
} 
else 
{ 
header("Location: main.php");
} 
} 
} 
if (isset($_POST['submit'])) { 
if(!$_POST['username'] | !$_POST['pass']) { 
die('
<h2> You did not fill in all of the fields</h2>
<p<a href="login.php">Return to login page</a>
'); 
} 
if (!get_magic_quotes_gpc()) { 
$_POST['email'] = addslashes($_POST['email']); 
} 
$check = mysql_query("SELECT * FROM users WHERE username = '".$_POST['username']."'")or die(mysql_error()); 
$check2 = mysql_num_rows($check); 
if ($check2 == 0) {
die('
<h2> That user does not exist in our database.<br/> </h2>
<p<a href="login.php">Return to login page</a>
'); 
} 
while($info = mysql_fetch_array( $check )) 
{ 
$_POST['pass'] = stripslashes($_POST['pass']); 
$info['password'] = stripslashes($info['password']); 
$_POST['pass'] = md5($_POST['pass']); 
if ($_POST['pass'] != $info['password']) { 
die('
<h2> Incorrect password, please try again</h2>
<p<a href="login.php">Return to login page</a>
'); 
} 
else 
{

$_POST['username'] = stripslashes($_POST['username']); 
$hour = time() + 3600;
setcookie(ID_forum, $_POST['username'], $hour);
setcookie(Key_forum, $_POST['pass'], $hour);     
header("Location: main.php"); 
} 
} 
} 
else 
{     
?> 
<form action="<?php echo $_SERVER['PHP_SELF']?>" method="post"> 
<table border="0"> 
<tr><td colspan=2><h1>Login</h1></td></tr> 
<tr><td><h2>Username:</h2></td><td> 
<input type="text" name="username" maxlength="40"> 
</td></tr> 
<tr><td><h2>Password:</h2></td><td> 
<input type="password" name="pass" maxlength="50"> </h2>
</td></tr> 
<tr><td colspan="2" align="right"> 
<input type="submit" name="submit" value="Login"> 
</td></tr> 
</table> 
</form>
<?php 
} 
?> 

 

Any help would be great

Thanks

 

[Alex]

Make sure you don't have any whitespace outside of PHP tags, that includes new lines. The error says that the output is started on line 7, so check there.

[KevinM1]

Also, we have a stickied topic for this: http://www.phpfreaks.com/forums/index.php/topic,37442.0.html

[woodplease]

i've made sure there are no white spaces, and i've still got the same problem. i've also read the sticky, but still no luck fixing the problem

[PFMaBiSmAd]

So, what are lines 1 through 7 of login.php or point out which line in the code you posted is line 7?

 

You likely have something on the line after one of the closing ?> tags.

 

Why do you have multiple opening/closing php tags? Just put one opening tag at the start and one closing tag at the end of your php code.

[woodplease]

i've removed all the extra tags.

 

<?php
include "./dbconnect.php";
forum_connect();
if(isset($_COOKIE['ID_forum']))
{
$username = $_COOKIE['ID_forum'];
$pass = $_COOKIE['Key_forum']; //line 7
$check = mysql_query("SELECT * FROM users WHERE username = '$username'")or die(mysql_error());
while($info = mysql_fetch_array( $check ))
{

[mikosiko]

i've removed all the extra tags.

 

<?php
include "./dbconnect.php";
forum_connect();
if(isset($_COOKIE['ID_forum']))
{
$username = $_COOKIE['ID_forum'];
$pass = $_COOKIE['Key_forum']; //line 7
$check = mysql_query("SELECT * FROM users WHERE username = '$username'")or die(mysql_error());
while($info = mysql_fetch_array( $check ))
{

 

and ?... it is working or not?.... if not:

- Check that your first line in the code that you posted is not a blank line (nothing before your first "<?php"

- Check the same for the file that you are including (dbconnect.php).

 

hope it helps

[woodplease]

it still wont work. there are no blank lines anywhere in the file, nor are there any in the dbconnect file

 

i've included the dbconnect.php in case this helps

 

<?php
function forum_connect(){
$db = mysql_connect("localhost", "test", "password") or die(mysql_error());
mysql_select_db("forum") or die(mysql_error());
}
?>

[Pikachu2000]

You didn't write these scripts in Notepad, or another generic editor  by chance, did you? I'm wondering if maybe there's a byte order mark in there somewhere.

[PFMaBiSmAd]

So, what is the current error message? Where does it say the output is occurring at?

[woodplease]

no, i'm using dreamweaver. the current error message is

 

"

Warning: Cannot modify header information - headers already sent by (output started at C:\Users\me\Desktop\xampp\htdocs\SciFiStorm\headerr.php:7) in C:\Users\me\Desktop\xampp\htdocs\SciFiStorm\main.php on line 34

[PFMaBiSmAd]

output started at C:\Users\me\Desktop\xampp\htdocs\SciFiStorm\headerr.php:7 (line 7)

 

^^^ You simply need to find what is being sent at or before line 7 in that file.

 

 

[woodplease]

I found the problem, there was a space next to one of the tags. when i removed it, it sorted the problem