Hello pipo Iam pretty new at php.I implemented a log in page as shown below:
<?php
session_start();
include("./connect.php");
// start the session
$errorMessage = '';
if (isset($_POST['txtUsername']) && isset($_POST['txtPassword'])) {
//---------------------------------------------------------------
if (isset($_POST['submit'])) { // if form has been submitted
//check out the fields
if (isset($_POST['txtUsername']) || isset($_POST['txtPassword'])) {
// check for required values
if (empty($_POST['txtUsername'])) {
die("ERROR: Please enter the username!");
}
if (empty($_POST['txtPassword'])) {
die("ERROR: Please enter password!");
}
}
}
//---------------------------------------------------------------
$result = mysql_query("SELECT Username, Password FROM members WHERE Username ='$_POST[txtUsername]' AND Password = '$_POST[txtPassword]'",$dbc);
// check if the specified username and password has been found
if (mysql_affected_rows() ==1) {
// set the session
$_SESSION['logged_in'] = true;
// after login we move to the main page
$loginpage="enterlottery.html";
?>
<HEAD>
<script type="text/javascript">
<!--
location.replace("<?php echo $loginpage; ?>?sid=<?php echo strip_tags($sid); ?>");
//-->
</script>
</HEAD>
<?php
}
else
{
$errorMessage = 'Sorry, wrong username and password,please try again!!!';
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
</head>
<body>
</body>
</html>
and am getting the following error:
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\wamp\www\lottery\memberlogin.php:2) in C:\wamp\www\lottery\memberlogin.php on line 3
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\wamp\www\lottery\memberlogin.php:2) in C:\wamp\www\lottery\memberlogin.php on line 3
please help
Unsolved 
