Getting an error when logging in

Parse error: parse error, unexpected T_STRING in /home/content/a/z/r/azreff/html/login.php on line 18


//Connect to database

mysql_connect ( $dbhost, $dbuser, $dbpass)or die("Could not connect: ".mysql_error() );
mysql_select_db ($dbname) or die(mysql_error ());

session_start() ;
$username = $_POST['username'];
$password...