code: private function logRequest()
      {
          $this->logRequestHeaders();
          if ($this->debug->getCfg('logEnvInfo.cookies')) {
              $cookieVals = $_COOKIE;
              \ksort($cookieVals, SORT_NATURAL);
              $this->debug->log('$_COOKIE', $cookieVals);
          }
          // don't expect a request body for these methods
          $noBody = !isset($_SERVER['REQUEST_METHOD'])
              || \in_array($_SERVER['REQUEST_METHOD'], array('CONNECT','GET','HEAD','OPTIONS','TRACE'));
          if ($this->debug->getCfg('logEnvInfo.post') && !$noBody) {
              if ($_POST) {
                  $this->debug->log('$_POST', $_POST);
              } else {
                  $input = \file_get_contents('php://input');
                  if ($input) {
                      $this->debug->log('php://input', $input);
                  } elseif (isset($_SERVER['REQUEST_METHOD']) && empty($_FILES)) {
                      $this->debug->warn($_SERVER['REQUEST_METHOD'].' request with no body');
                  }
              }
              if (!empty($_FILES)) {
                  $this->debug->log('$_FILES', $_FILES);
              }
          }
      }
docs: Log Cookie, Post, & Files data
  
  @return void