此数据类型(获取请求）是什么 bit.ly oauth2

{ "status_code": 200, "status_txt": "OK", "data": { "long_url": "http:'/'/google.com'/", "url": "http:'/'/bit.ly'/17A2GVj", "hash": "17A2GVj", "global_hash": "3j4ir4", "new_hash": 0 } } 

我做完一个后得到这样的东西

$curl = curl_init();
// Set some options - we are passing in a useragent too here
curl_setopt_array($curl, array(
    CURLOPT_RETURNTRANSFER => 1,
    CURLOPT_URL => 'https://api-ssl.bitly.com/v3/shorten?access_token=xxx&longUrl=http%3A%2F%2Fgoogle.com%2F',
    CURLOPT_USERAGENT => 'Mozilla/4.0'
));
// Send the request & save response to $resp
$resp = curl_exec($curl);
// Close request to clear up some resources
curl_close($curl);
echo $resp;

如何阅读"哈希"