session.php

          if ( !empty( $username ) && !empty( $password ) ) {
               if ( $id = User::authenticateUser( $username, $password ) ) {
                   $_SESSION[ 'user' ] = array(
                       'userid' => $id,
                       'username' => $username
                   );
                   throw new RedirectException( 'index.php?resource=dashboard&method=view' );
               }
               throw new RedirectException( 'index.php?resource=session&method=create&error=yes' );
           }
           if ( empty( $username ) ) {
               throw new RedirectException( 'index.php?empty_user=yes&resource=session&method=create' );
           }
           throw new RedirectException( 'index.php?empty_pass=yes&resource=session&method=create' )