sailthru/Sailthru_Client.php
public function saveUser($id, array $options = [ ]) {
        $data = $options;
        $data['id'] = $id;
        return $this->apiPost('user', $data);
    }
public function saveUser($id, array $options = [ ]) {
        $data = $options;
        $data['id'] = $id;
        return $this->apiPost('user', $data);
    }
public function saveUser ( $ id , array $ options = [ ] ) { $ data = $ options ; $ data [ 'id' ] = $ id ; return $ this -> apiPost ( 'user' , $ data ) ; }
Save existing user
@param String $id
@param array $options
@return array
Save existing user