PHPのStrava APIからJSONデータをデコードする

Question

こんにちは私はSTRAVA APIに接続しており、その応答からJSON形式で応答を得ています。以下のJSONデータから、ユーザー名、都市、国などを取得する必要があります

これはどのようにPHPやJavascriptを使って実現できますか？以下は、私がAPIから得たサンプルレスポンスです。

Array ([0] => stdClass Object ([athlete] => stdClass Object ([id] => 8022511 [username] => adamjones [resource_state] => 2 [firstname] => Adam [lastname] => Jones [city] => Hyderabad [state] => Telangana [country] => India [sex] => M [premium] => [created_at] => 2015-02-23T06:37:17Z [updated_at] => 2016-03-15T04:33:06Z [badge_type_id] => 0 [profile_medium] => https://graph.facebook.com/v2.1/10004102544/picture?height=256&width=256 [profile] => https://graph.facebook.com/v2.1/10004102544/picture?height=256&width=256 [friend] => [follower] =>) [description] => [distance] => 42031.71247288 [elevation_gain] => 241.8005935689 [id] => 3878028 [map] => stdClass Object ([id] => r3878028 [summary_polyline] => gqoiByqh}Mu@EWtD~Ms@jp@bGxReGze@xWhy@zNjSxBxGwH|B|I|DfAhoBtTrlA|CjBmCs@kFtCeCrG{k@bHePhZ{f@zH}W`BofBrRkwAj[vLjCtRpJvLdHrObR|KxA|Rve@zaApOrOrFhQ|AbUwBve@lO~a@dAWTgFxAiBvf@oBxy@gRhaAqj@PcByHoVub@`QwByAgsBzcA}EpAiEgEeC^cBhA`@|Ew@xByv@~]elAz_@eNjBcbAgMe@mGxB{DcAw@oA|@EaBeBnAb@dH{BzAskAeDioBuT}DgA{AeHkC|QcAj@yDkHqkAsTqf@mWsQpFqp@cGsa@MrRh@VuDbAF [resource_state] => 2) [name] => My Fav [private] => [resource_state] => 2 [starred] => [sub_type] => 1 [timestamp] => 1451823069 [type] => 1)) 

Answer 1

サンプルレスポンスは配列とオブジェクトの組み合わせではありませんが、

echo "Username : $username<br>"; 
echo "City : $city <br>"; 
echo "Country : $country <br>";