เรื่องการอัพเดทรูปภาพ ... ผมทำไฟล์ edit ผู้ใช้ ครับละทีนี้ผมจะนำรูปภาพใหม่มาอัพเดทจะทำไงครับ

<?php 

include("Connections/config.inc.php") ;
/* add by kergrit(redthird.com) for compatible global variable off/on php.ini */
$kind = $_POST['kind'];
$general = $_POST['general'];
$title=$_POST['title'];
$detail = $_POST['detail'];
$price = $_POST['price'];
$num = $_POST['num'];
$guarante = $_POST['guarante'];
$prod_new = $_POST['new'];
$promotion = $_POST['promotio'];
$show = $_POST['show'];
$id=$_POST['id'];
/* end of add */


$date_up = date('Y-m-d ');
$tmp_file      =$_FILES['files']['tmp_name'];
$filename     =$_FILES['files']['name'];
$type           =$_FILES['files']['type'];
$picpath="myFiles/".$filename ;
$path="myFiles/"; //??????????? pdf
$upload=copy($files,"$path".$filename); //????????????????

	    $sql[0] = "update product set kind_id='$kind' where id='$id'"; 
		
		$sql[1] = "update product set general='$general' where id='$id'"; 
       
        $sql[2] = "update product set title='$title' where id='$id'"; 
               
        $sql[3] = "update product set detail='$detail' where id='$id'";  
      
		$sql[4] = "update product set price='$price' where id='$id'";   
	
		$sql[5] = "update product set product_num='$num' where id='$id'";   
	
		$sql[6] = "update product set guarartee='$guarante' where id='$id'";  
	
		$sql[7] = "update product set prod_new='$prod_new' where id='$id'";  
	
		$sql[8] = "update product set prod_promotion='$promotion' where id='$id'"; 
		
		$sql[9] = "update product set prod_show='$show' where id='$id'"; 
	
	    $sql[10] = "update product set date_up ='$date_up' where id='$id'"; 

		$sql[11] = "update product set picpath='$picpath' where id='$id'"; 
		
       for($i=0;$i<13;$i++) {
      $result = mysql_query($sql[$i]) or die("Err program")  ;
       }

if($result) {
echo "<br><br><center><font size=\"3\" face='MS Sans Serif'><b>รายละเอียดของคุณ ได้ถูกบันทึกใหม่แล้วครับ</b></font></center>" ;
echo "<meta http-equiv='refresh' content='3; url=product_dail.php'>" ;
}

?>
</body>
</html>