echo array key?

[ievernova]

Hi,

I m trying to export a cart script to paypal as a form, for paypal to understand that ive sent multiple items i need to give each product in the array a number starting from one going up in numberical order,

iv tried to use a for loop with an increment counthing variable for($counter=1;$counter>0;$coutner++) but cant get it to work with this existing code; whats the easiest way to do this?! i know how to get all of the variables and stuff into the form o i would just like to know how to output the array key number (is i?) as a variable where it says in teh code below...

 

i want the final output to be something like this

                       

1 ProductA Quantity: 20

2 ProductB Quantity: 15

3 ProductC Quantity: 6

 

this is the point at which i output the cart before proceeding to the checkout,

 

function writeShoppingCart() {
$cart = $_SESSION['cart'];
if (!$cart) {
	return '<p>You have no items in your shopping cart</p>';
} else {
	// Parse the cart session variable
	$items = explode(',',$cart);
	$s = (count($items) > 1) ? 's':'';
	return '<p>You have <a href="cart.php">'.count($items).' item'.$s.' in your shopping cart</a></p>';
}
}

function showCart() {
global $db;
$cart = $_SESSION['cart'];
if ($cart) {
	$items = explode(',',$cart);
	$contents = array();
	foreach ($items as $item) {
		$contents[$item] = (isset($contents[$item])) ? $contents[$item] + 1 : 1;
	}
	$output[] = '<form action="cart.php?action=update" method="post" id="cart">';
	$output[] = '<table>';
	foreach ($contents as $id=>$qty) {
		$sql = 'SELECT * FROM syn_vinyl_product WHERE prod_id = '.$id;
		$result = $db->query($sql);
		$row = $result->fetch();
		extract($row);
		$output[] = '<tr>';
		$output[] = '<td><a href="cart.php?action=delete&id='.$id.'" class="r">Remove</a></td>';
		$output[] = '<td>'.$prod_title.' by '.$artist.'</td>';
		$output[] = '<td>£'.$price.'</td>';
		$output[] = '<td><input type="text" name="qty'.$id.'" value="'.$qty.'" size="3" maxlength="3" /></td>';
		$output[] = '<td>£'.($price * $qty).' ////////////////ITEM NUMBER HERE /////////////////</td>';
		$total = '';
		$total += $price * $qty;
		$output[] = '</tr>';
	}
	$output[] = '</table>';
	$output[] = '<p>Grand total: <strong>£'.$total.'</strong></p>';
	$output[] = '<div><button type="submit">Update cart</button></div>';
	$output[] = '</form>';
} else {
	$output[] = '<p>You shopping cart is empty.</p>';
}
return join('',$output);
}

 

the cart code

 

<?php
##########
### saved from http://v3.thewatchmakerproject.com/journal/276/building-a-simple-php-shopping-cart
##########


// Include MySQL class
require_once('mysql.class.php');
// Include database connection
require_once('global.inc.php');
// Include functions
require_once('functions.inc.php');
// Start the session
session_start();
// Process actions
$cart = $_SESSION['cart'];
$action ='';
if (isset($_GET['action']))
{
$action = $_GET['action'];
};
switch ($action) {
   case 'add':
      if ($cart) {
         $cart .= ','.$_GET['id'];
      } else {
         $cart = $_GET['id'];
      }
      break;
   case 'delete':
      if ($cart) {
         $items = explode(',',$cart);
         $newcart = '';
         foreach ($items as $item) {
            if ($_GET['id'] != $item) {
               if ($newcart != '') {
                  $newcart .= ','.$item;
               } else {
                  $newcart = $item;
               }
            }
         }
         $cart = $newcart;
      }
      break;
   case 'update':
   if ($cart) {
      $newcart = '';
      foreach ($_POST as $key=>$value) {
         if (stristr($key,'qty')) {
            $id = str_replace('qty','',$key);
            $items = ($newcart != '') ? explode(',',$newcart) : explode(',',$cart);
            $newcart = '';
            foreach ($items as $item) {
               if ($id != $item) {
                  if ($newcart != '') {
                     $newcart .= ','.$item;
                  } else {
                     $newcart = $item;
                  }
               }
            }
            for ($i=1;$i<=$value;$i++) {
               if ($newcart != '') {
                  $newcart .= ','.$id;
               } else {
                  $newcart = $id;
               }
            }
         }
      }
   }
   $cart = $newcart;
   break;
}
$_SESSION['cart'] = $cart;
?>

 

THANKS ALOTT!!!!!!!!!

[trq]

I'm not digging through your code, but you'll want to use a foreach. eg;

 

$a = array('this','is','foo');

foreach ($a as $k => $v) {
  echo "$k $v<br />";
}

[ievernova]

im already using a foreach loop to output the cart items and have tried using soemthing like that already, as far as i understand i want to put teh foreach loop you mentioned above where the current foreach loop mis that display the cart items, how do i combine two foreach loops?

[timt]

I read through it.  $items appears to be an array of item id's that the customer selected.  $contents appears to be an attempt to get rid of empty nodes (does not look right).  I would code it directly like this:

 

  $contents = array();
  $cnt = 0;
  foreach ($items as $item) {
    if (isset($item) {
      $cnt += 1;
      $contents[$cnt] = $item;
  } }