ขอคำแนะนำเรื่องการทำกราฟคะ จะดัดแปลงนึดหน่อย ขอคำแนะนำด้วยคะ

<?php session_start();
	//include("cksession.php");
	include("config.php");
				//$adminid=$_SESSION['adminid'];
				if(!isset($_GET['start'])){
						$start = 0;
				}else{
					$start = $_GET['start'];
				}
$Condition = array();
		if($_POST['year']!=""){
				$Condition[]=$_POST['year'];
				$yeat_title=$_POST['year'];
		}else{
		
				$Condition[]=date('Y');
				$yeat_title=date('Y');
		}
		
		if(count($Condition)!=0){
			$strCond = implode('/',$Condition);
					 $con=" WHERE  dateregist LIKE('$strCond%' )";
		}else{
		 $con=" where 1  ";
		}
		
			 	$sql=" SELECT COUNT( id ) as total , MONTH(`dateregist`) as month ";
				$sql.=" FROM contact ";
				$sql.= $con;
				$sql.=" GROUP BY MONTH( `dateregist` ) ORDER BY  MONTH(`dateregist`) asc   ";				 
				$rs1=mysql_query($sql,$conn);
				
				$graph= array(0,0,0,0,0,0,0,0,0,0,0,0,0);
				while($data=mysql_fetch_array($rs1)){
				
				$graph[$data['month']]=$data['total'];
				
				}
					include "libchart/classes/libchart.php";

					$chart = new VerticalBarChart();
				
					$dataSet = new XYDataSet();
					$dataSet->addPoint(new Point("มกราคม", $graph[1]));
					$dataSet->addPoint(new Point("กุมภาพันธ์", $graph[2]));
					$dataSet->addPoint(new Point("มีนาคม", $graph[3]));
					$dataSet->addPoint(new Point("เมษายน",$graph[4]));
					$dataSet->addPoint(new Point("พฤษภาคม", $graph[5]));
					$dataSet->addPoint(new Point("มิถุนายน", $graph[6]));
					$dataSet->addPoint(new Point("กรกฎาคม",$graph[7]));
					$dataSet->addPoint(new Point("สิงหาคม", $graph[8]));
					$dataSet->addPoint(new Point("กันยายน",$graph[9]));
					$dataSet->addPoint(new Point("ตุลาคม", $graph[10]));
					$dataSet->addPoint(new Point("พฤศจิกายน", $graph[11]));
					$dataSet->addPoint(new Point("ธันวาคม", $graph[12]));
					$chart->setDataSet($dataSet);
				
					$chart->setTitle(" กราฟสมาชิก  ปี  ".($yeat_title+543));
					$chart->render("generated/demo1.png");
			//	print_r($graph);

?>