Question

I’m very new to php and I have a Json like this :

{
  "customer_id": "guest_user_101",
  "merchantId": "guest",
  "cards": 
  [
    {
      "card_token": "0784ba0c-dc07-489e-a57d-16dfcb39868f"
    },
    {
      "card_token": "fe4ebe01-bbb6-46b6-8e49-5c572ee20bc7"
    }
  ]
}

I wish to find whether there is a card_token in cards. Are there any easy and elegant way to do that? Note that there can also be a case where cards have empty list.

Currently I do this way:

$json->cards[0]->card_token

But I guess there will be a better solution for this problem.

Thanks in advance.

Answer 1

function is_card_token_present($json)
{   
    $present = false;
    foreach($json['cards'] as $card)
        if(isset($card['card_token'])) 
            $present = true;

    return $present;
}

Should work 🙂 Might need a bit of tweaking because I can’t test it at the moment but the concept is there.