<?php/*V4.01 23 Oct 2003  (c) 2000-2005 John Lim (jlim@natsoft.com.my). All rights reserved.         Contributed by Ross Smith (adodb@netebb.com).  Released under both BSD license and Lesser GPL library license.  Whenever there is any discrepancy between the two licenses,  the BSD license will take precedence.	  Set tabs to 4 for best viewing.*/if (!function_exists('gzcompress')) {	trigger_error('gzip functions are not available', E_USER_ERROR);	return 0;}/**/class ADODB_Compress_Gzip {	/**	 */	var $_level = null;	/**	 */	var $_min_length = 1;	/**	 */	function getLevel() {		return $this->_level;	}	/**	 */	function setLevel($level) {		assert('$level >= 0');		assert('$level <= 9');		$this->_level = (int) $level;	}	/**	 */	function getMinLength() {		return $this->_min_length;	}	/**	 */	function setMinLength($min_length) {		assert('$min_length >= 0');		$this->_min_length = (int) $min_length;	}	/**	 */	function ADODB_Compress_Gzip($level = null, $min_length = null) {		if (!is_null($level)) {			$this->setLevel($level);		}		if (!is_null($min_length)) {			$this->setMinLength($min_length);		}	}	/**	 */	function write($data, $key) {		if (strlen($data) < $this->_min_length) {			return $data;		}		if (!is_null($this->_level)) {			return gzcompress($data, $this->_level);		} else {			return gzcompress($data);		}	}	/**	 */	function read($data, $key) {		return $data ? gzuncompress($data) : $data;	}}return 1;?>