Array 2 มิติ...เนื่องจากว่า สินค้าสามารถเลือกราบละเอียดได้ เช่น เสื้อ มีสีแดง และสีเหลือง กางเกง มีสีดำ และสีน้ำเงิน

<?
session_start();

$id_product=$_POST[id_product];
$id_color=$_POST[id_color];


$_SESSION["myCart"]= $myCart; 

$_SESSION['sess_num']=$sess_num;

			if(count($myCart)==0) {
				$check=1;
				}
			else if  (!in_array($myCart,$myCart)) {
				$check=1;
				}
			if ($check==1)  {
				include "connect.php";
				$sql = "select * from tb_product where id_prd = '$id_product' " ;
				
				$result = mysql_db_query($dbname,$sql);
				$rs = mysql_fetch_array($result);
				$sess_id[] = $rs[id_prd];
				$sess_name[] = $rs[name];
				
				
				
				$sql1 = "select * from color  where id_color = '$id_color' " ;
				
				$result1 = mysql_db_query($dbname,$sql1);
				$rs1 = mysql_fetch_array($result1);
				$sess_id_color[] = $rs1[id_color];
				$sess_name_color[] = $rs1[name_color];
				
				$myCart=array($sess_id,$sess_id_color);							
				
				$sess_num [] =1;

				}

		print_r ($myCart);
	//	header ("Location: page3.php" ) ;
		//	session_destroy();

?>

$product = array();

$product['shirt'][]   =  "T-shirt";
$product['shirt'][]   =  "T-shirt";

$product['color'][] = "Black";
$product['color'][] = "Blue";



print_r ($product);

<?
session_start();

$id_product=$_POST[id_product];
$id_color=$_POST[id_color];

$_SESSION[numb]=$num;

$product = array();

for($i=0;$i<=$numb;$i++){
$product['shirt'][$i]   =  "$id_product";
$product['color'][$i] = "$id_color";

}

print_r ($num);

echo"<br><br><br>";

print_r ($product);
?>

  session_start();
  
  $_SESSION['shirt'][]  =   1;
  $_SESSION['color'][]  =   4;
  
  print_r ($_SESSION);

<?
session_start();
$id_product=$_POST[id_product];
$id_color=$_POST[id_color];

$_SESSION['cart'][] = array(
                                           "qty" => $id_color,
                                           "productId" => $id_product,
                                        );



if(isset($_SESSION['cart']))
{
      foreach($_SESSION['cart'] as $cartItems)
      {
       

            else
            {
                  $_SESSION['cart'][] = array(
                                           "qty" => $id_color,
                                           "productId" => $id_product,
                                        );

            }
      }
}


else
{
            $_SESSION['cart'][] = array(
                                           "qty" => $id_color,
                                           "productId" => $id_product,
                                        );
}

print_r($cart);



?>