Having trouble getting a specific value in JSON/PHP - php

Question

I am trying to pull one single piece of data from a json encoded string. I managed to get the string into php's jason format, but I dont understand how to display the exact data I want (confirmations) Every time I try to access any of the data it just gives me a bracket({) and no data. I know I'm doing something wrong with retreiving the data from the variable, but I can't pu tmy finger on it.
Here's the data I want to parse, could someone please show me how to access the confirmations value from within the array of data? Thanks.
( https://projectbuilder.info/link.php?ID=jsontest&CMD=page ) [easier to read]
Source Code:
<?PHP
$return = file_get_contents("https://api.chain.com/v2/bitcoin/transactions/76e6f17cb940745255e2b8439eea5dae945a b148f1fbba98a9fb99c9a5801320?api-key-id=ae7317a1cd4ff0d12e49a77bfd8b9dec");
var_dump(json_decode($return));
echo $return[0]["confirmations"]; //one of my many attempts to get the info, also tried without the leading zero, and different numbers. I understand arrays, I just dont understand how the json data is formatted inside the array.
?>
Output Copy(what do I do with $return to get it's confirmation value of 2896?):
object(stdClass)#1 (11) {
["hash"]=>
string(64) "76e6f17cb940745255e2b8439eea5dae945ab148f1fbba98a9fb99c9a5801320"
["block_hash"]=>
string(64) "00000000000000001646d024d4622a0e4a5c06299d7d776de041bc9c317be1f8"
["block_height"]=>
int(329486)
["block_time"]=>
string(20) "2014-11-11T02:10:21Z"
["chain_received_at"]=>
string(24) "2014-11-11T02:05:48.259Z"
["confirmations"]=>
int(2896)
["lock_time"]=>
int(0)
["inputs"]=>
array(2) {
[0]=>
object(stdClass)#2 (7) {
["transaction_hash"]=>
string(64) "76e6f17cb940745255e2b8439eea5dae945ab148f1fbba98a9fb99c9a5801320"
["output_hash"]=>
string(64) "4f7b6066396e422f1cabd60767093ec6fb4480b60f206c408ad50895541bc023"
["output_index"]=>
int(0)
["value"]=>
int(144475)
["addresses"]=>
array(1) {
[0]=>
string(34) "1HPvAS96JXYUuLDs5CKNh61SvH6NJT1ykH"
}
["script_signature"]=>
string(213) "304602210087289ed01fd7d04e3c7eb5c38ea1944cbc3789658a1122610079a4f0421e2426022100fca6f5f4623bbac131f06ebdc7389ea0c76b4355da9508ecc7b02107385ee79d01 029a79a3cf6f8b90b7c1210e593a21e46c81ffbbe544eb2ab3ebbd89f33e4f8b2e"
["sequence"]=>
int(4294967295)
}
[1]=>
object(stdClass)#3 (7) {
["transaction_hash"]=>
string(64) "76e6f17cb940745255e2b8439eea5dae945ab148f1fbba98a9fb99c9a5801320"
["output_hash"]=>
string(64) "22de0dbb8d72fac9a6e8775f6f80fa3fc991c41d33fcd5081acb49c0479f2a62"
["output_index"]=>
int(1)
["value"]=>
int(7390022)
["addresses"]=>
array(1) {
[0]=>
string(34) "158kR5o6EWWhFEZfLqGDvkgfoyi2Ep2fhA"
}
["script_signature"]=>
string(209) "304402205e2f36c9c22e02767e3accc8bc609b74d5a23c58e4a8edbac24cb4baf1e3feaa022043ad33becd57c5dee03fd1c1d8be1524281f6f49ba1e44a1a2b340f89554c42d01 031181694e14973f71d45f5f3ab73ee0f30dfa3f488bf53c44e46cf9f4f3d3d722"
["sequence"]=>
int(4294967295)
}
}
["outputs"]=>
array(2) {
[0]=>
object(stdClass)#4 (9) {
["transaction_hash"]=>
string(64) "76e6f17cb940745255e2b8439eea5dae945ab148f1fbba98a9fb99c9a5801320"
["output_index"]=>
int(0)
["value"]=>
int(144475)
["addresses"]=>
array(1) {
[0]=>
string(34) "1P5rwnk3GYbxgpxN9M9EziLrpvoih4c8JC"
}
["script"]=>
string(85) "OP_DUP OP_HASH160 f23e1f6dd21bab989f18c14f26bf37b4e2372eef OP_EQUALVERIFY OP_CHECKSIG"
["script_hex"]=>
string(50) "76a914f23e1f6dd21bab989f18c14f26bf37b4e2372eef88ac"
["script_type"]=>
string(10) "pubkeyhash"
["required_signatures"]=>
int(1)
["spent"]=>
bool(false)
}
[1]=>
object(stdClass)#5 (9) {
["transaction_hash"]=>
string(64) "76e6f17cb940745255e2b8439eea5dae945ab148f1fbba98a9fb99c9a5801320"
["output_index"]=>
int(1)
["value"]=>
int(7380022)
["addresses"]=>
array(1) {
[0]=>
string(34) "1DpY5Mu2qTNkwsnPwgqFnaZ1Kq7GpKDboy"
}
["script"]=>
string(85) "OP_DUP OP_HASH160 8c9efff6e8500a36c16a939054a333d81ef23166 OP_EQUALVERIFY OP_CHECKSIG"
["script_hex"]=>
string(50) "76a9148c9efff6e8500a36c16a939054a333d81ef2316688ac"
["script_type"]=>
string(10) "pubkeyhash"
["required_signatures"]=>
int(1)
["spent"]=>
bool(true)
}
}
["fees"]=>
int(10000)
["amount"]=>
int(7524497)
}
{

Answer 1

Have a look at the docs: http://php.net/json_decode
Convert the json-string to a php-array and save it in a variable. Then use it like any other array to get values from it. Like this:
$return = file_get_contents('http://etc.com/');
$decoded_return = json_decode($return);
echo $decoded_return['confirmations']; //Make sure the key exists, obviously
So keep in mind that $return is a string. The json_decode function returns an array, so you have to save that array in a (new - preferably) variable to get values from it.