Fitmetrix quick'n'dirty API Wrapper

fitmetrixapi.php

<?php

class FitmetrixAPI{

  private $base_url;
  private $encoded_auth;
  private $facility_location_id;

  public function __construct($token, $token_key, $facility_location_id){
    $this->base_url = 'https://api.fitmetrix.io/api/';
    $this->encoded_auth = base64_encode("$token:$token_key");
    $this->facility_location_id = $facility_location_id;
  }

  public function getTrainers(){
    $api_query = self::curlRequest('instructor?pageSize=999');
    return $api_query;
  }

  public function getPackages(){
    $api_query = self::curlRequest('facility/locations/'.$this->facility_location_id.'/packages');
    return $api_query;
  }

  public function getActivities(){
    $api_query = self::curlRequest('facility/locations/'.$this->facility_location_id.'/upcoming');
    return $api_query;
  }

  private function curlRequest($endpoint){
    $curl = curl_init();
    curl_setopt_array($curl, array(
      CURLOPT_URL => $this->base_url . $endpoint,
      CURLOPT_CUSTOMREQUEST => "GET",
      CURLOPT_HTTPHEADER => array(
        "authorization: Basic " . $this->encoded_auth
      ),
      CURLOPT_RETURNTRANSFER => true,
    ));
    $response = curl_exec($curl);
    $err = curl_error($curl);
    curl_close($curl);
    if ($err) {
      return "cURL Error #:" . $err;
    } else {
      return $response;
    }
  }
  
}