$_SERVER get code status

<?php
  function get_status($code) {
    switch ($code) {
      case 400:
        return "Bad Request";
      case 403:
        return "Forbidden";
      case 404:
        return "Not Found";
      case 500:
        return "Internal Server Error";
      case 503:
        return "Service Unavailable";
    }
  }
  
  get_status(403);
?>