function __construct()
 {
     $this->File = false;
     $thus->Level = false;
     parent::__construct('GZIP (shell)', 'gzipshell');
 }
 function __construct()
 {
     parent::__construct('BZIP2', 'bz2');
 }
 function __construct(&$handler, $name, $identifier)
 {
     $this->ForwardHandler =& $handler;
     parent::__construct($name, $identifier);
 }
 function __construct()
 {
     $this->File = false;
     $this->Level = false;
     parent::__construct('GZIP (zlib)', 'gzipzlib');
 }
 function __construct()
 {
     parent::__construct('No compression', 'no');
 }