Re: Stripping a JSON of extra characters in PHP

In article <[email protected]>,
J.O. Aho <[email protected]> wrote:
>On 2/6/23 16:28, The Doctor wrote:
>> In article <[email protected]>,
>> J.O. Aho <[email protected]> wrote:
>>> On 06/02/2023 02:31, The Doctor wrote:
>>>> And in the case of recurring items when being puleld from
>>>> a form getting parsed?
>>>
>>> If you are thinking of post value which is an array, then the simplest
>>> would be:
>>> $a->cart = (object)$_POST['cart']; // this may give you object you don't
>>> want
>>>
>>> Just keep in mind that the data is unsafe to use, you should do the long
>>> way and validate the data and as you validate you can then add the
>>> values to a temp variable and if all the cart items passes validation,
>>> then add it to the main json object  (in this silly example the $a).
>>>
>>> If you get a new cart posted (updates), then  replace the current one
>>> you have in the session, don't forget to validate the data before you
>>> replace the cart section.  Only have the latest validated one
>>> $a->cart = $validated_shopping_cart; // validated_shopping_cart is a
>>> json object
>>>
>>> for duplicate entries you have to decide what to do, cast an error or
>>> merge them together, that is up to you, but do not have duplicate items
>>> in your json object.
>>>
>>> I hope that was the answer you was looking for.
>>>
>> 
>> The cart is being derived from a previous form being passed into PHP!
>> 
>> 
>> Just an update
>> The cart section is now an issue .
>> 
>
>> 'cart' => array(
>> (foreach ($_POST['quantity'] as $key => $value) {
>> 
>>    if( $value > 0){
>> 
>>      if(isset($_POST['with_gst'][$key])){
>>        $unit_cost = 63.00;
>>      }else{
>>        $unit_cost = 60.00; //no gst included
>>      }
>> 
>>      $subtotal = ($unit_cost * $value);
>>      $quantity = ($value);
>> 
>> 	$cart['items'][] =array(
>>           'url' => "https://www.pdsolutions.ca/images/newwhiteheader.png",
>>          'description' => $_POST['description'][$key],
>>          'product_code' => $_POST['id'][$key],
>>         'unit_cost' => $unit_cost,
>>         'quantity' => $quantity,
>> 	),
>>      $newtotal += $subtotal;
>>      $items_count++;
>>      array_push(items,itemsubarray);
>>    	}
>>    }
>>           
>>          'subtotal' => $newtotal,
>>      if(isset($_POST['with_gst'][$key])){
>>          'tax'=>array(
>>            'amount' => ($newtotal * 0.05),
>>            'description' => "GST",
>> 	  'rate' => "5.00",
>>            ),
>>      })
>> ),
>
>It's messy and a lot of hard coded things and I'm just guessing what you 
>try to do, I think I would have done things differently, for example 
>posting all the data maybe as a serialized json object from the client 
>side, I would fetch the items value from the database together with 
>description, I would have the tax rate in the database too, easy to 
>change the the tax in the database when the the government changes it.
>
>I made an small example that take the cart part, not sure if it's what 
>you want to have, but at least should give you some idea and the reason 
>I didn't use $_POST values is that it's easier to test things when you 
>can modify values based on what you want and fine tune things till they 
>are right, then you can modify the constructor to not take any 
>arguments, I would make the "cart" class to hold all the values you need 
>for your json.
>If you need to use values between functions, then use private, for then 
>they will not be included when you use the json_encode()
>
>--- simple example ---
><?php
>
>class cart {
>   public $total = 0;
>   public $items = [];
>   private $uber = "man"; // this will not be included in the json output
>
>   public function __construct($quantityArray, $gstArray, $descArray, 
>$idArray) {
>     foreach($quantityArray as $key => $num_items)
>     {
>         if($num_items == 0)
>             continue;
>
>         $has_tax = isset($gstArray[$key]);
>         $unit_cost = $has_tax ? 63 : 60;
>         $sub_total = $num_items * $unit_cost;
>         $this->total = $sub_total;
>
>         $item = [
>             'url' => 
>'https://www.pdsolutions.ca/images/newwhiteheader.png',
>             'description' => $descArray[$key],
>             'product_code' => $idArray[$key],
>             'unit_cost' => number_format($unit_cost, 2),
>             'quantity' => $num_items,
>             'subtotal' => number_format($sub_total, 2),
>         ];
>
>         if($has_tax) {
>             $item['tax'] = (object)[ 'amount' => 
>number_format($sub_total * 0.05), 'description' => "GST", 'rate' => 
>'5.00' ];
>         }
>
>         $this->items[] = (object)$item;
>
>     }
>   }
>}
>
>$q = [1, 2, 0];
>$g = [1, 1, 0];
>$d = ['banana', 'apple', 'car'];
>$i = [22, 11, 33];
>
>$cart = new cart($q, $g, $d, $i);
>echo json_encode($cart, JSON_PRETTY_PRINT);
>?>
>--- eof ---
>
>You can also see the use of number_format(), that just so we get the 
>right number of decimals, I haven't bothered about rounding which would 
>be sane. And it's the "items" that should be something similar to your cart.
>
>-- 
>
>  //Aho
>
>
>

Will try.  Basing this in the Moneris docs.
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