phpseclib\Net\SFTP::nlist PHP Method

    function nlist($dir = '.', $recursive = false)
    {
        return $this->_nlist_helper($dir, $recursive, '');
    }

 /**
  * {@inheritdoc}
  */
 public function getDirectoryContentsList($remoteDirectory)
 {
     if ($this->isConnected()) {
         $contentsList = array_values(array_diff($this->connection->nlist($remoteDirectory), array('.', '..')));
         sort($contentsList);
         return $contentsList;
     }
     return array();
 }