RE: [PHP] Warning: Cannot modify header information - headers already sent by (o

[Mike Mapsnac]

Thank for your help ..

One more question:
I include header to the acount.php page. And it gives the same error, but in 
this situation I don't have any outputs.

Also, I start session in header, not in the account.

<?php
//Account.php
//session_start();
include_once("lib/lib_main.php");
dbConnect($host, $user, $pass);
include_once 'header_account.php';

$password = $_POST['password'];
$username = $_POST['username'];
$sql_login = mysql_query("SELECT id from user WHERE username='$username' and 
password=password('$password')");

if(mysql_num_rows($sql_login)) {
 $_SESSION['login'] = 'register';
 $_SESSION['name'] = "$username";
 Header("Location: " ."index.php");
}
echo "<FORM ACTION=\"$PHP_SELF\" METHOD=\"POST\">";
?>
<table align="center">
 <tr><td>Username:</td><td> <input type="username" 
name="username"></td></tr>
 <tr><td>Password:</td><td> <input type="password" 
name="password"></td></tr>
<tr><td></td><td align="center"><input type="submit" name="submit" 
value="Submit"></td><tr></table>
 <?php echo "</FORM>"; ?>

//File: header_account.php
<?php
session_start(); ?>
<LINK REL="stylesheet" HREF="style.css" TYPE="text/css">
<table width="100%" align="center"  border=1 cellpadding=0 cellspacing=0>
   <tr><td bgcolor="#5bb9f7">&nbsp;</td></tr>
<tr><td align="center" bgcolor="FFFFFF">
  <b><A HREF="/" CLASS="pointerBar">Home</A>&nbsp;&nbsp;&nbsp;&nbsp;<A 
HREF="resize.php" CLASS="pointerBar">Resize</A></td><tr>
<tr><td bgcolor="#5bb9f7">&nbsp;</td></tr>
</table>

From: "Chris W. Parker" <[EMAIL PROTECTED]>
To: "Mike Mapsnac" <[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>
Subject: RE: [PHP] Warning: Cannot modify header information - headers 
already sent by (output sta
Date: Tue, 9 Mar 2004 17:46:21 -0800

Mike Mapsnac <mailto:[EMAIL PROTECTED]>
    on Tuesday, March 09, 2004 5:42 PM said:
> This code below gives me this error message:
> Warning: Cannot modify header information - headers already sent by
> (output started at /var/www/html/account.php:6) in
> /var/www/html/account.php on line 17
>
> The script check in the database if user exists and than redirect the
> page to the home index.php page. I know the problem exist in the
> header() .. But I don't understand why?
the error is telling you that you cannot output anything to the client
BEFORE modifying the headers, i.e. redirecting. you have a lot of output
starting on line 6 in /var/www/html/account.php.
hth,
chris.
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