JSON decode to PHP not working - php

Question

I try to put a JSON Object into a PHP Variable, it is not working. When I var_dump it, it says NULL.
PHP:
<?php
$json = utf8_encode(file_get_contents('http://socialclub.rockstargames.com/ajax/stat/1/profile_body/sta1/drantifat'));
$data = json_decode($json, false);
$money = $data->tplc->stats; // -> What do i have to do to reach the id:GTA Online Cash and use the val: $33.9K ?
?>
JSON file example: (it changes over time)
{"cid":0,"ttl":"Grand Theft Auto V",
"ishs":false,"issa":false,"istc":false,"htl":true,"tlc":"text",
"tlt":"View Stats","tlh":"/member/drantifat/games/gtav/career/overview",
"iso":false,"cmng":false,"order":0,"uid":0,"ttc":0,
"tplc":"{\"game\":\"GTAV\",\"stats\":[{\"id\":\"Game Progress\",\"val\":\"58.77%\"},
{\"id\":\"Missions Passed\",\"val\":\"55\"},{\"id\":\"Playing Time\",\"val\":\"29:00:33\"},
{\"id\":\"GTA Online RP\",\"val\":\"2.4M\"},{\"id\":\"GTA Online Rank\",\"val\":\"128\"},
{\"id\":\"GTA Online Cash\",\"val\":\"$33.9K\"},
{\"id\":\"GTA Online Playing Time\",\"val\":\"529:44:12\"}],
\"url\":\"/member/drantifat/games/gtav/career/overview\"}","isa":false,"cnt":""}
Could anyone also help me with what I've mentioned in the PHP file?

Answer 1

tplc isn't a JSON object, it's a string that is itself JSON.
<?php
$json = utf8_encode(file_get_contents('http://socialclub.rockstargames.com/ajax/stat/1/profile_body/sta1/drantifat'));
$data = json_decode($json, false);
$tplc = json_decode($data->tplc);
$money = $tplc->stats;
?>
To get the money value specifically:
<?php
$json = utf8_encode(file_get_contents('http://socialclub.rockstargames.com/ajax/stat/1/profile_body/sta1/drantifat'));
$data = json_decode($json, false);
$tplc = json_decode($data->tplc);
$stats = $tplc->stats;
foreach ($tplc->stats as $stat) {
if ($stat->id == 'GTA Online Cash') {
$money = $stat->val;
break;
}
}
echo $money;
?>