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Revision 68 Revision 1257
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	 * @param	mixed	unique identifier of item in cache
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	 * @param	mixed	unique identifier of item in cache
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	 * @return	bool	true on success/false on failure
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	 * @return	bool	true on success/false on failure
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	 */
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	 */
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	public function delete($id)
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	public function delete($id)
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	{
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	{
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		return file_exists($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE;
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		return is_file($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE;
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	}
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	}
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	// ------------------------------------------------------------------------
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	// ------------------------------------------------------------------------
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	 * @param	mixed	key to get cache metadata on
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	 * @param	mixed	key to get cache metadata on
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	 * @return	mixed	FALSE on failure, array on success.
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	 * @return	mixed	FALSE on failure, array on success.
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	 */
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	 */
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	public function get_metadata($id)
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	public function get_metadata($id)
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	{
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	{
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		if ( ! file_exists($this->_cache_path.$id))
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		if ( ! is_file($this->_cache_path.$id))
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		{
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		{
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			return FALSE;
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			return FALSE;
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		}
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		}
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		$data = unserialize(file_get_contents($this->_cache_path.$id));
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		$data = unserialize(file_get_contents($this->_cache_path.$id));
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		if (is_array($data))
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		if (is_array($data))
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		{
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		{
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			$mtime = filemtime($this->_cache_path.$id);
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			$mtime = filemtime($this->_cache_path.$id);
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			if ( ! isset($data['ttl']))
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			if ( ! isset($data['ttl'], $data['time']))
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			{
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			{
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				return FALSE;
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				return FALSE;
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			}
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			}
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			return array(
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			return array(
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				'expire' => $mtime + $data['ttl'],
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				'expire' => $data['time'] + $data['ttl'],