[SOLVED] says header info has been ssent, but it hasn't!

[Cobby]

Hello,

 

I have a problem, it says header information has been sent by my config.php file, which just stores some variables.

 

Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\user\admin\configs\config.php:15) in C:\wamp\www\user\admin\login.php on line 44

 

config.php

<?php


$server = "localhost";
$db_user = "root";
$db_pass = "no";  //not my real password, intentionally change for the this topic
$db_name = "no";  //not real db, see above comment

$link = mysql_connect($server, $db_user, $db_pass, $db_name);
$select = mysql_select_db($db_name, $link);

require_once("C:/wamp/www/user/admin/smarty/libs/Smarty.class.php");
$smarty = new Smarty;

?> 

 

login.php

<?php

function login($username, $password, $link){
if (empty($username) && empty($password)){
	$error = "Some fields are empty.";
	return $error;
}else{
	$sql = "SELECT * 
		FROM `jc_users` 
		WHERE `username` = '".mysql_escape_string($username)."' 
		AND `password` = '".mysql_escape_string($password)."'";

	$query = mysql_query($sql, $link);

	if(mysql_num_rows($query) == 1){
		return 'true';
	}else{
		$error = "You have supplied an invalid username or password.";
		return $error;
	}	
}	
}

session_start();

include 'configs/config.php';

if(isset($_SESSION['authenticated']) && $_SESSION['authenticated'] == true){
	header("Location: http://localhost/JC Epidemic/admin//index.php");
}else{	
if(isset($_POST['submit'])){

	$login = login($_POST['username'], $_POST['password'], $link);
	if($login == true){
		header("Location: http://localhost/JC Epidemic/admin/index.php");
	}else{
		$smarty->assign("error", login($_POST['username'], $_POST['password'], $link));
		$smarty->assign("title", "Event Management System - Error!");
		$smarty->display("overall_header.tpl.html");
		$smarty->display("loginform.tpl.html");
		$smarty->display("overall_footer.tpl.html");		
	}

}else{
	$smarty->assign("title", "Event Management System");
	$smarty->display("overall_header.tpl.html");
	$smarty->display("loginform.tpl.html");
	$smarty->display("overall_footer.tpl.html");	
}
}	



?>

 

Can someone tell me where the header info is been sent?

 

Cheers,

Cobby

[teng84]

session_start(); this should be declared at the top most of the page or add ob_start() at the top

[Cobby]

session_start(); this should be declared at the top most of the page or add ob_start() at the top

 

Thanks for that, but login hasn't been finished yet, I am going to move the login() function when its all working to config.php.

[corbin]

Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\user\admin\configs\config.php:15) in C:\wamp\www\user\admin\login.php on line 44

 

That means that it's unable to send the headers requested to be sent on line 44 of login.php because, data has already been sent by line 15 of config.php.

 

Basically that means something is being output in config.php on line 15, and it can't send headers after that.

[Cobby]

Just did a little experiment, I replace include 'configs/config.php'; with the actual contents of config.php and it work???

[Cobby]

Basically that means something is being output in config.php on line 15, and it can't send headers after that.

 

But thats the thing, line 15 is the ?> end tag.

[Cobby]

Ok, this is freaking me out, I moved all the data from config.php for it was just left with <?php ?> (just one line) and that still return the header sent error!

 

But if I remove the php open/close tags everything goes normal.

[vijayfreaks]

Hi..

        try to remove blank line and then check..

 

-Vijay

[Cobby]

Ok, I didn't solve the problem...but I found a solution:

 

<?php

function redirect($delay, $url){
echo "<meta content=\"".$delay."; URL=".$url."\" http-equiv=\"Refresh\" />";
}

?>

Hope that helps someone in the future, redirects regardless of headers 

Cheers,
Cobby

[Sesquipedalian]

It's because header(); has to be set at the beginning of the document (or if not at the beginning before anything else is actually done).

 

So like this wouldn't work:

 

echo 'Hello World';
if (1=1) {
header('page.php');
}

 

but this might?

 

if (1=1) {
header('page.php');
}
echo 'Hello World';

[dbo]

I've seen this problem occur when there are newlines at the end of an include file... after the ?> tag.