Update Shopping Cart

[makamo66]

If you were working on a PHP shopping cart using SESSION variables for the cart item's product id and quantity, how would you update the cart if the same product were chosen? If the same product id was posted, how would you add the quantities and show just the same product?

[Barand]

Like this example in this topic

 

1) Read your replies

2) Don't repeatedly post the same question.

[makamo66]

I'm doing something like that. My quantity is updating when I add the same product but I need to delete the product that's the last item in the SESSION array. So far I've tried array_pop and unset but I can't get rid of the non-updated product.

These two don't work to remove the last product added to the session:

unset($_SESSION["cart_item"]["element_id"]);
array_pop($_SESSION["cart_item"]);

[Barand]

3 minutes ago, makamo66 said:

but I need to delete the product that's the last item in the SESSION array

Why?

[makamo66]

The last product in the SESSION array is the product with the non-updated quantity. When I update the quantity, I get the previous product and also the updated product. I have to remove the non-updated product. 
 

[Barand]

30 minutes ago, makamo66 said:

I'm doing something like that

Doesn't sound like you are doing anything like that.

In my code, if the product isn't in the cart it adds it, with the quantity. If the product is already in the cart it updates the quantity.

No removals required (unless, of course, the user wants to cancel)

[makamo66]

This is what I'm using and it's not working:

foreach($cart_items as $item) {
foreach($item["id"] as $key => $val) {
foreach($item["quantity"] as $i => $value) {
if ($key == $i){    
if(empty($item["quantity"])){
  $item["quantity"] = $value;
} elseif (isset($_REQUEST["quantity_$i"]) ) {
$item["quantity"] = $value + $_REQUEST["quantity_$i"];
$value = $item["quantity"];
 echo "Same product";
}}}}
 
 

[NotSunfighter]

It looks to me that your making things harder than they should be. Here's what I would do for a cart array:

	<?php 
	$cart_items = array("pants"=>"3", "shirt"=>"4",  "shoe"=>"5", "banana"=>"13",  "hat"=>"1"); 
	foreach ($cart_items as $item => $quantity){ 
	    echo "Item name is ".$item." and he wants this amount ".$quantity."\n"; 
	}
	?> 

Edited November 9, 2019 by NotSunfighter

[NotSunfighter]

And I'd remove objects from the array like this

	<?php 
	$cart_items = array("pants"=>"3", "shirt"=>"4",  "shoe"=>"5", "banana"=>"13",  "hat"=>"1"); 
	 
	if (($key = array_search('4', $cart_items)) !== false) {
	    unset($cart_items[$key]);
	}
	 
	foreach ($cart_items as $item => $quantity){ 
	    echo "Item name is ".$item." and he wants this amount ".$quantity."\n"; 
	}
	?> 
	

[Barand]

 

@NotSunfighter He was shown exactly how to do it in a previous topic of his in this forum. Not worth wasting any more time.