creating nested associative array from json code - php

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:[phone]",
"merchantCode": "01234",
"merchantPin": "1234",
"merchantNumber": "tel:[phone]",
"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:[phone] [merchantCode] => 01234 [merchantPin] => 1234 [merchantNumber] => tel:[phone] [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

Answer 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.

Answer 2

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);

Answer 3

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:[phone]",
"merchantCode": "01234",
"merchantPin": "1234",
"merchantNumber": "tel:[phone]",
"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);
?>