creating nested associative array from json code

Question

I am creating an associative array from a json code so that i can use in my curl code that connects to an API. Now it seems like the associative array outputted is incorrect. I would like to format it correctly, but now I get message an error saying the array is incorrect.

The json code:

{
"payment": [
    {
        "clientCorrelator": "54321",
        "endUserId": "tel:+16309700001",
        "merchantCode": "01234",
        "merchantPin": "1234",
        "merchantNumber": "tel:+16309700001",
        "notifyURL": "http://example.com/notifyURL",


        "paymentAmount": {
            "chargingInformation": [
                {
                    "amount": "10",
                    "currency": "USD",
                    "description": "AlienInvadersGame"
                }
            ],
            "chargingMetaData": [
                {
                    "onBehalfOf": "Example Games Inc",
                    "purchaseCategoryCode": "Game",
                    "channel": "WAP",
                    "taxAmount": "0"
                }
            ],
            "referenceCode": "REF-12345",
            "transactionOperationStatus": "Charged"
        }
    }
]


}

The php code to build the array:

jasondata = file_get_contents("payment.json");
$json = json_decode($jasondata, true);
$payment = ($json['payment']) ;

print_r($payment);

The output:

Array ( [0] => Array ( [clientCorrelator] => 54321 [endUserId] => tel:+16309700001 [merchantCode] => 01234 [merchantPin] => 1234 [merchantNumber] => tel:+16309700001 [notifyURL] => http://example.com/notifyURL [paymentAmount] => Array ( [chargingInformation] => Array ( [0] => Array ( [amount] => 10 [currency] => USD [description] => AlienInvadersGame ) ) [chargingMetaData] => Array ( [0] => Array ( [onBehalfOf] => Example Games Inc [purchaseCategoryCode] => Game [channel] => WAP [taxAmount] => 0 ) ) [referenceCode] => REF-12345 [transactionOperationStatus] => Charged ) ) )

My main goal is to remove the [0] indexes without messing up the array. please assist

You can't, since 'payment' is an array of objects. the 0 is necessary in php - array entries MUST have keys. — Marc B
– Marc B, Commented Jul 15, 2015 at 16:54
@JonathanKuhn only got rid of the first [0] zero index, thanks. any idea how to get rid of the rest of them ? — kya
– kya, Commented Jul 15, 2015 at 16:57
@kya eval.in/399423 But if you exactly know that all arrays have only one Item — splash58
– splash58, Commented Jul 15, 2015 at 17:04

Jonathan Kuhn · Accepted Answer · 2015-07-15 16:58:47Z

1

instead of $payment = ($json['payment']);

change that to $payment = reset($json['payment']);

However if there are multiple entries under payment, then you should just loop over them like:

foreach($json['payment'] as $payment){
    print_r($payment);
}

The loop also would work if there was any number of elements under payment, so not just multiple.

answered Jul 15, 2015 at 16:58

Jonathan Kuhn

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2 Comments

kya Over a year ago

it worked for the first [0] zero index, but not for nested zero indexes

Jonathan Kuhn Over a year ago

@kya reset will only get the first index. If you have more you would want to loop over them or you would need to set them each to a different variable. There is no way to get rid of the numbers otherwise. Even in javascript/json, you don't see the numbers, but javascript will add them when parsing the json into an object in script.

splash58 · Accepted Answer · 2015-07-15 22:05:26Z

more or less safe function

$payment = json_decode($str, true);

function RemoveZeroIndex(&$arr) {
  foreach($arr as $key => &$item) {       // walk array
     if (is_array($item) &&               // if array
        (count($item) === 1) &&           // with one item
        isset($item[0]))                  // and numeric index
            $item = $item[0];             // shift it
     if (is_array($item)) 
        RemoveZeroIndex($item);           // call recursively
   }
}

RemoveZeroIndex($payment);
print_r($payment);

PHPhil · Accepted Answer · 2015-07-15 17:25:56Z

In addition to Jonathan Khun.

For your nested arrays you just do the same. Reset the internal pointer of that array.

<?php

$jasondata = '{
"payment": [
    {
        "clientCorrelator": "54321",
        "endUserId": "tel:+16309700001",
        "merchantCode": "01234",
        "merchantPin": "1234",
        "merchantNumber": "tel:+16309700001",
        "notifyURL": "http://example.com/notifyURL",


        "paymentAmount": {
            "chargingInformation": [
                {
                    "amount": "10",
                    "currency": "USD",
                    "description": "AlienInvadersGame"
                }
            ],
            "chargingMetaData": [
                {
                    "onBehalfOf": "Example Games Inc",
                    "purchaseCategoryCode": "Game",
                    "channel": "WAP",
                    "taxAmount": "0"
                }
            ],
            "referenceCode": "REF-12345",
            "transactionOperationStatus": "Charged"
        }
    }
]


}';

$json = json_decode($jasondata, true);
$payment = reset($json['payment']);
$payment['paymentAmount']['chargingInformation'] = reset($payment['paymentAmount']['chargingInformation']);
$payment['paymentAmount']['chargingMetaData'] = reset($payment['paymentAmount']['chargingMetaData']);

echo "<pre>";
print_r($payment);
?>

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