function summary_print_by_project( $p_projects = null, $p_level = 0, $p_cache = null ) {
		$t_mantis_bug_table 	= config_get( 'mantis_bug_table' );
		$t_mantis_project_table = config_get( 'mantis_project_table' );

		$t_project_id = helper_get_current_project();

		if ( null == $p_projects ) {
			if ( ALL_PROJECTS == $t_project_id ) {
				$p_projects = current_user_get_accessible_projects();
			} else {
				$p_projects = Array( $t_project_id );
			}
		}

		# Retrieve statistics one time to improve performance.
		if ( null === $p_cache ) {
			$query = "SELECT project_id, status, COUNT( status ) AS count
					FROM $t_mantis_bug_table
					GROUP BY project_id, status";

			$result = db_query( $query );
			$p_cache = Array();

			$t_resolved_val = RESOLVED;
			$t_closed_val = CLOSED;
			
			$p_cache[ $v_project_id ][ 'open'     ]  = 0;

			while ( $row = db_fetch_array( $result ) ) {
				extract( $row, EXTR_PREFIX_ALL, 'v' );

				switch( $v_status ) {
					case $t_resolved_val:
										$p_cache[ $v_project_id ][ 'resolved' ]  = $v_count;
										break;
					case $t_closed_val:
										$p_cache[ $v_project_id ][ 'closed'   ]  = $v_count;
										break;
					default:
										$p_cache[ $v_project_id ][ 'open'     ]  += $v_count;
										break;
				}
			}
		}

		foreach ( $p_projects as $t_project ) {
			$t_name = str_repeat( "� ", $p_level ) . project_get_name( $t_project );

			$t_pdata = isset( $p_cache[ $t_project ] ) ? $p_cache[ $t_project ]
			             : array( 'open' => 0, 'resolved' => 0, 'closed' => 0 );

			$t_bugs_open     = isset( $t_pdata['open'] ) ? $t_pdata['open'] : 0;
			$t_bugs_resolved = isset( $t_pdata['resolved'] ) ? $t_pdata['resolved'] : 0;
			$t_bugs_closed   = isset( $t_pdata['closed'] ) ? $t_pdata['closed'] : 0;
			$t_bugs_total    = $t_bugs_open + $t_bugs_resolved + $t_bugs_closed;

			summary_helper_print_row( $t_name, $t_bugs_open, $t_bugs_resolved, $t_bugs_closed, $t_bugs_total );

			$t_subprojects = current_user_get_accessible_subprojects( $t_project );

			if ( count( $t_subprojects ) > 0 ) {
				summary_print_by_project( $t_subprojects, $p_level + 1, $p_cache );
			}
		}
	}