gistfile1.txt

if(isset($_GET['code'])){

    $clientid         = 'XXXX';
    $clientsecret     = 'XXXXXXXXXXX';
    $returnurl         = 'XXXXXXX';

    $initialurl = 'https://api.envato.com/token';

    $fields = array(
        'grant_type' => urlencode('authorization_code'),
        'code' => urlencode($_GET['code']),
        'client_id'     => urlencode($clientid),
        'client_secret' => urlencode($clientsecret)
    );

    //url-ify the data for the POST
    foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
    $fields_string = rtrim($fields_string, '&');

    $ch = curl_init($initialurl);

    //curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, count($fields));
    curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
    curl_setopt($ch, CURLOPT_USERAGENT, $clientid);

    $cinit_data = curl_exec($ch);

    $initialdata = json_decode($cinit_data, true);

    curl_close($ch);

    if(empty($initialdata['access_token'])){ $errors[] = 'Could not get bearer, please contact admin'; }

    //now lets get the username from envato
    if(!$errors){

        //setting the header for the rest of the api
        $bearer = 'bearer ' . $initialdata['access_token'];    
        $header = array();
        $header[] = 'Content-length: 0';
        $header[] = 'Content-type: application/json';
        $header[] = 'Authorization: ' . $bearer;

        $usernameurl = 'https://api.envato.com:443/v1/market/private/user/username.json';
        $ch_username = curl_init($usernameurl);

        curl_setopt($ch_username, CURLOPT_HTTPHEADER, $header);
        curl_setopt($ch_username, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch_username, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch_username, CURLOPT_CONNECTTIMEOUT, 5);
        curl_setopt($ch_username, CURLOPT_USERAGENT, $clientid);

        $cinit_username_data     = curl_exec($ch_username);
        $username_data             = json_decode($cinit_username_data, true);

        curl_close($ch_username);

        if(empty($username_data['username'])){ $errors[] = 'Could not get username, please contact admin'; } else { $username = $username_data['username']; }

        //do what you wish with the username
    }

}