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Hello All,

I have went through my code and checked for any whitespace or blank spaces and also missing closing marks and etc. But the error message clearly states that it is initiated at line 8 of my php code. Is it my echo in the code? Can someone please guide me? The error I am getting is this: Warning: Cannot modify header information - headers already sent by (output started at C:\XAMPP\htdocs\login.php:8) in C:\XAMPP\htdocs\authentication.php on line 29

Warning: Cannot modify header information - headers already sent by (output started at C:\XAMPP\htdocs\login.php:8) in C:\XAMPP\htdocs\authentication.php on line 30
Please enter your username and password

<?php
require_once 'login.php';
$db_server = mysql_connect($db_hostname, $db_username, $db_password);
if(!$db_server)die("Unable to connect to MySQL: " . mysql_error());
mysql_select_db($db_database)
	or die("Unable to select database: " . mysql_error());
if (isset($_SERVER['PHP_AUTH_USER'])&&
	isset($_SERVER['PHP_AUTH_PW']))
{
	$un_temp = mysql_entities_fix_string($_SERVER['PHP_AUTH_USER']);
	$pw_temp = mysql_entities_fix_string($_SERVER['PHP_AUTH_PW']);	
         $query = "SELECT * FROM users WHERE username=$un_temp";
	$result  = mysql_query($query);
	if(!$result)die("Database access failed: " . mysql_error());
	elseif (mysql_num_rows($result))
	{
		$row = mysql_fetch_row($result);
		$salt1 = "qm&h";
		$salt2 = "pg!@";
		$token = md5("$salt1$pw_temp$salt2");
		if($token == $row[3]) echo "$row[0] $row[1] :
		   Hi $row[0], you are now logged in as $row[2]";
		else die("Invalid username/password combination");
	}
	else die("Invalid username/password combination");
}
else
{
	header("WWW-Authenticate: Basic realm=Restricted Section");
	header("HTTP/1.0 401 Unauthorized");
	die("Please enter your username and password");
}
function mysql_entities_fix_string($string)
{
	return htmlentities(mysql_fix_string($string));
}
function mysql_fix_string($string)
{
	if(get_magic_quotes_gpc()) $string = stripslashes($string);
	return mysql_real_escape_string($string);
}
?>
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6 Years
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Last Post by choosenalpha
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You posted the wrong code. The error says output started in login.php, but you posted code for, I'm guessing, authentication.php.

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Yes your right thank you!! That's what it was I failed to pick that up..there was an extra space in the login.php file. I must have accidentally touched that file today :(

It is working fine now..thanks again quasipickle :)

You posted the wrong code. The error says output started in login.php, but you posted code for, I'm guessing, authentication.php.

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