[Using Kimono api data in php]

I am a noob in api so please bear with me. I tried google searching for 1 hour but I can't understand anything from the results.

 

Currently, I have an API in kimono with the given example data :

 

{

 "name": "Summoners-Details",

 "count": 31,

 "frequency": "On demand",

 "version": 7,

 "newdata": false,

 "lastrunstatus": "success",

 "thisversionrun": "Tue Sep 02 2014 02:34:07 GMT+0000 (UTC)",

 "lastsuccess": "Tue Sep 02 2014 02:34:07 GMT+0000 (UTC)",

 "stats": {

"retriedUrls": [],

"failedUrls": [],

"successful": 1,

"rows": 31,

"retried": 0,

"failed": 0,

"duration": 1894

 },

 "results": {

"rank": [

 {

"division": "Wukong's Lancers Silver-tier II"

 }

]

 }

}

Here is the php code I am trying to use to get the division data, but I am getting nothing! :

 

<?php

$request = "https://www.kimonolabs.com/api/c6qj1oc?apikey=xxxxxxxxxxxxxxxxxx";

$response = file_get_contents($request);

$results = json_decode($response, TRUE);



$division = $results->{'results'}->{'rank'}->{'division'};

echo $division;

?>

What am I doing wrong here??