lbry.com/lib/tools/Config.class.php

<?php

class Config
{
  const HELP_CONTACT_EMAIL = 'josh@lbry.io';

  //Constant to help with managing strings
  const IS_PROD = "is_prod";
  const GITHUB_KEY = "github_key";
  const GITHUB_DEVELOPER_CREDITS_CLIENT_ID = "github_developer_credits_client_id";
  const GITHUB_DEVELOPER_CREDITS_CLIENT_SECRET = "github_developer_credits_client_secret";
  const LBRY_API_SERVER = "lbry_api_server";
  const MAILCHIMP_KEY = "mailchimp_key";
  const ASANA_KEY = "asana_key";
  const AWS_LOG_ACCESS_KEY = "aws_log_access_key";
  const AWS_LOG_SECRET_KEY = "aws_log_secret_key";
  const MAILGUN_API_KEY = "mailgun_api_key";
  const SALESFORCE_KEY = "salesforce_key";
  const SALESFORCE_SECRET = "salesforce_secret";
  const SLACK_ERROR_NOTIFICATION_URL = "slack_error_notification_url";


  protected static $loaded = false;
  protected static $data = [];

  public static function get($name, $default = null)
  {
    static::load();
    return array_key_exists($name, static::$data) ? static::$data[$name] : $default;
  }


  protected static function load()
  {
    if (!static::$loaded)
    {
      $dataFile = ROOT_DIR.'/data/config.php';
      if (!is_readable($dataFile))
      {
        throw new RuntimeException('config file is missing or not readable');
      }
      static::$data = require $dataFile;
      static::$loaded = true;
    }
  }
}