How to get data from php array?

Question

PHP

echo $token['access_token'] ; gives an error ( Notice: Undefined index: access_token ). Tell me how to get access to access_token correctly ?
Content print_r($token);

Array ([{ "access_token": "EAAFONltZB2jwBAOZCbrSbat1EFZCdwxQuZC4XFJXJtcIPD0qAZARfJLIQ
HJvqUv0LItHFiyBU7LZA8OLHdc9ZAWkDkSDvHiFF9thtl7NeZBnLGVdXOhw0XhxGy3RduC
4ZABjYuxbue1HBHFK5CoaKdEzYspghkN93KqpvSBFHNtZAgJAZDZD", "token_type": "bearer",
"expires_in": 5135190}] =>)

Answer 1

the array contains json, which must first be decoded.
php.net/manual/en/function.json-decode.php