Php get email and username

API
3

Its not a solution,

curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer '. $validate_token,
    'Client-ID: '. $clientID
));

I add a space in 'Authorization: Bearer ’ and 'Client-ID: ’

again : {“error”:“Unauthorized”,“status”:401,“message”:“OAuth token is missing”}