Shagged multiple updates could use some help

[dragon_sa]

I have a form which shows products ordered from a catalog, it used to work fine when I had individual change buttons for each item, now I have to have multiple check boxes for removing items and the ability to change the quantities of multiple items with a single button. I know you have to use foreach and arrays for this but I am confusing myself trying to make the changes for it to update the correct items.

 

Attached is a pic of what the form looks like and is how it is supposed to function

 

here is the form part

<?php 
for ($basket_counter=0;$basket_counter<$_SESSION['ses_basket_items'];$basket_counter++) {
  		$price=sprintf("%01.2f",$ses_basket_price[$basket_counter]);
   		$quantity=$ses_basket_amount[$basket_counter];
	$code=$ses_basket_stockcode[$basket_counter];
	$itemID=$ses_basket_id[$basket_counter];
   		$name=$ses_basket_name[$basket_counter];
	$image=$ses_basket_image[$basket_counter];
	if ($country='AU') { $price=sprintf("%01.2f",($price*1.1));
	$unit=sprintf("%01.2f",($price/$quantity));
	 }
	else
	{ $unit=sprintf("%01.2f",($price/$quantity)); }
?><form method='post' action='' target="_self">
		<tr>
		  <td align='center' class='rescon' style="border-bottom:solid #330000 1px;"><input type="checkbox" name="remove[]" value="<?php echo $itemID; ?>" /></td>
		  <td align='left' class='rescon' style="border-bottom:solid #330000 1px;"><img src="product_images/<?php echo $image; ?>" width="60" alt="<?php echo $name; ?>" title="<?php echo $name; ?>" /></td>
		  <td align='left' class='rescon' style="border-bottom:solid #330000 1px;"><font size="+1"><?php echo $name; ?></font><br/><?php echo $code; ?></td>
            	<td align='left' class='rescon' style="border-bottom:solid #330000 1px;"> </td>
            	<td align='center' class='rescon' style="border-bottom:solid #330000 1px;"><input name="price" type="hidden" value="<?php echo $unit; ?>"><input type="hidden" name="pageLink" value="<?php echo $pageLink; ?>" /><input name="basket[]" type="hidden" value="<?php echo $itemID; ?>"><input name="quantity[]" style="vertical-align:middle;" type="text" value="<?php echo $quantity; ?>" size="2" maxlength="5"> </td>
            	<td align='center' class='rescon' style="border-bottom:solid #330000 1px;">$<?php echo $unit; ?></td>
            	<td class='rescon' align='right' bgcolor="#FFFF00" style="border-bottom:solid #330000 1px;">$<?php echo $price; ?> </td>
            </tr>
<?php }  
if ($country='AU') { $totalprice=sprintf("%01.2f",array_sum($ses_basket_price)); $totalprice=sprintf("%01.2f",($totalprice*1.1)); }
	else
	{ $totalprice=sprintf("%01.2f",array_sum($ses_basket_price)); }
   	$totalitems=array_sum($ses_basket_amount); ?>
   			<tr><td align='left' colspan='4' valign="top" class='cartbot'> </td>
            	<td align='left' valign="top" class='cartbot'><?php echo $totalitems; ?> Items</td>
                <td align='right' colspan='2' class='cartbot'><?php echo "<b>Subtotal:  $".$totalprice." </b>"; ?></b></td>
         	</tr>
   			<tr>
   			  <td align='left' colspan='5' valign="top"><input type="submit" id="change" name="change" style="vertical-align:middle;" value="Change"></td>
   			  <td align='right' colspan='2'> </td>
	  </tr></form>

 

and here is the processing part at the top of the page which I have sorta shagged, could use some help getting it to update the correct items for remove and quantity changes

// cart application
if (isset($_POST['change'])) {
$basket = $_POST['basket'];
// check faor AU to include GST
if ($country='AU') { $itemprice = sprintf("%01.2f",(($_POST['price']/11)*10)); }
else
{ $itemprice = $_POST['price']; }
$itemqty = $_POST['quantity'];
$newprice = ($itemprice*$itemqty);
if (($basket!="") && (isset($_POST['change']))){
   	if ($_SESSION['ses_basket_items']){
	// basket position
	$basket_position_counter=0;
	// double entry flag set to NO
	$double=0;
	// Check for existing basket id
	if ($_SESSION['ses_basket_items']>0){
	   foreach ($ses_basket_id as $basket_item){
	      if ($basket_item==$basket){
	         // If exist flag for update
			 $double=1;
	         $basket_position=$basket_position_counter;
	      }
		  // Add new basket position
	      $basket_position_counter++;
	   }
	}
	// Update basket with new quantity and price
	if ($double==1){
	   $ses_basket_amount[$basket_position]=$itemqty;
	   $ses_basket_price[$basket_position]=$newprice;
	}
}
// Delete Item when set to 0
if ($itemqty == "0") {
	array_splice ($ses_basket_name, $basket_position, 1);
	array_splice ($ses_basket_amount, $basket_position, 1);
	array_splice ($ses_basket_price, $basket_position, 1);
	array_splice ($ses_basket_stockcode, $basket_position, 1);
	array_splice ($ses_basket_image, $basket_position, 1);
	array_splice ($ses_basket_id, $basket_position, 1);
	$_SESSION['ses_basket_items']--;
}
if (isset($remove) && ($remove!='')) {
	$remove = $_POST['remove'];
    	if(count($remove) > 0){
       		foreach($remove AS $removed){
				array_splice ($ses_basket_name, $basket_position, 1);
			array_splice ($ses_basket_amount, $basket_position, 1);
			array_splice ($ses_basket_price, $basket_position, 1);
			array_splice ($ses_basket_stockcode, $basket_position, 1);
			array_splice ($ses_basket_image, $basket_position, 1);
			array_splice ($ses_basket_id, $basket_position, 1);
			$_SESSION['ses_basket_items']--;
        	}
    	}
}
}
if ($_SESSION['ses_basket_items']==0){
unset($_SESSION['ses_basket_items']);
unset($_SESSION['ses_basket_name']);
unset($_SESSION['ses_basket_amount']);
unset($_SESSION['ses_basket_price']);
unset($_SESSION['ses_basket_stockcode']);
unset($_SESSION['ses_basket_image']);
unset($_SESSION['ses_basket_id']);
header("Location: $pageLink");
}
}

 

the array variables I have here are $basket, $remove and $quantity.

 

[attachment deleted by admin]