Error

[Billett]

i get this error

PHP Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\website\login.php:97) in C:\Program Files\Apache Group\Apache2\htdocs\website\login.php on line 143
PHP Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\website\login.php:97) in C:\Program Files\Apache Group\Apache2\htdocs\website\login.php on line 144
PHP Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\website\login.php:97) in C:\Program Files\Apache Group\Apache2\htdocs\website\login.php on line 146
PHP Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\website\login.php:97) in C:\Program Files\Apache Group\Apache2\htdocs\website\login.php on line 145

What can i do about it?

[rgermain]

Show the code that is causing this error and that could help us help you.

[Billett]

<?php

if(isset($_POST['submit'])) { //Handle the form

	require_once ('./mysql_connect.php'); //connect to database

	//Function to escape the data
	function escape_data ($data) {
		global $dbc;
		if(ini_get('magic_quotes_gpc')) {
			$data = stripslashes($data);
			}
			return mysql_real_escape_string($data, $dbc);
		}//End of the function

		$message = NULL; //New empty variable
		if(empty($_POST['username'])) {
			$username = FALSE;
			$message .= '<p align="center">Please enter your username</p>';
		} else {
			$username = escape_data($_POST['username']);
		}

		if(empty($_POST['password'])) {
			$password = FALSE;
			$message .= '<p align="center">Please enter your password</p>';
		} else {
			$password = escape_data($_POST['password']);
		}

		if($username && $password) { 

		$query = "SELECT user_id, name FROM users WHERE username='$username' AND password=PASSWORD('$password')";
		$result = @mysql_query ($query);
		$row = mysql_fetch_array ($result, MYSQL_NUM);

		if($row) {

			//Session
			$_SESSION['name'] = $row[1];
			$_SESSION['user_id'] = $row[0];
			header ("Location: [url]http://[/url]" . $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']) . 
			"/loggedin.php");
			exit();

		} else {
			$message = '<p align="center">Your username and file do not match those on file</p>';
		}

		mysql_close();

	} else {
		$message .= '<p align="center">Please try again</p>';
	}
}

if(isset($message)) {
	echo $message;
}
?>

[Weedpacket]

Make sure that any work that involves headers (e.g., whatever it is your doing on lines 143, 144, 145, 146, etc.) is done before generating any output (e.g., whatever is being generated by line 97).

You can't send headers after you've started sending content.

[Billett]

not sure what u mean so here is the whole file