Сохранение шаблонов в кеш сайта на PHP

<?php
class Phpfox_Cache_Storage_File extends Phpfox_Cache_Abstract
{
	private $nameArray = array();	
	private $_name;
	private $fromMemory = false;
	private $skipClose  = false;

	public function set($name, $group = '')
	{		
		if (is_array($name))
		{
			if (PHPFOX_SAFE_MODE | PHPFOX_OPEN_BASE_DIR)
			{
				$name = str_replace(array('/', PHPFOX_DS), '_', $name[0]) . '_' . $name[1];
			}
			else
			{
				if ($name[0] == 'feed' | $name[0] == 'feed_mobile')
				{
					$name[0] = $name[0] . '_' . Phpfox::getLib('locale')->getLangId();
				}

				$sNewDirectory = PHPFOX_DIR_CACHE . $name[0];
				if (!is_dir($sNewDirectory))
				{
					Phpfox::getLib('file')->mkdir($sNewDirectory, true, 0777);				
				}

				$name = rtrim($name[0], '/') . PHPFOX_DS . $name[1];
			}
		}

		$id = $name;
		$this->nameArray[$id] = (strlen($name) > 150) ? substr($name, 0, 150) : $name;
		$this->_name = $name;

		if ($group == 'memory')
		{
			$this->fromMemory = true;	
		}		

		return $id;
	}	

	public function skipClose($close)
	{
		$this->skipClose = $close;		

		return $this;
	}

	public function get($id, $time = 0)
	{
		# We don't allow caching during an install or upgrade.
		if (defined('PHPFOX_INSTALLER'))
		{
			return false;
		}		

		if ($this->fromMemory)
		{
			$this->fromMemory = false;

			return false;
		}

		(PHPFOX_DEBUG ? Phpfox_Debug::start('cache') : false);

		if (!$this->isCached($id, $time))
		{
			return false;
		}

		require($this->_getName($this->nameArray[$id]));

		(PHPFOX_DEBUG ? Phpfox_Debug::end('cache', array('namefile' => $this->_getName($this->nameArray[$id]))) : false);

		if (empty($content))
		{
			return false;
		}		

		if ($this->skipClose === false)
		{
			$this->skipClose = false;
			$this->close($id);		
		}

		if (!is_array($content) && empty($content))
		{
			return true;
		}	

		if (is_array($content) && !count($content))
		{
			return true;
		}

		return $content;
	}

	public function save($id, $content)
	{	
		if (defined('PHPFOX_IS_HOSTED_SCRIPT'))
		{		
			return false;	
		}

		# We don't allow caching during an install or upgrade.
		if (defined('PHPFOX_INSTALLER'))
		{
			return false;
		}

		if ($this->fromMemory)
		{
			$this->fromMemory = false;
			$this->close($id);

			return false;
		}		

		if ($this->_getParam('free'))
		{
			$_content = $content;
		}
		else 
		{
			$_content = '<?php $content = ' . var_export($content, true) . '; ?>';
		}

		if ($open = fopen($this->_getName($this->nameArray[$id]), 'w+'))
		{	
			fwrite($open, $_content);
			fclose($open);			
		}
	}

	public function close($id)
	{
		unset($this->nameArray[$id]);		
	}

	public function remove($name = null, $type = '')
	{
		if (file_exists(PHPFOX_DIR_CACHE . 'cache.lock'))
		{
			return false;
		}

		if ($name === null)
		{
			foreach ($this->getAll() as $aFile)
			{
				if (file_exists(PHPFOX_DIR_CACHE . $aFile['name']))
				{
					if (is_dir(PHPFOX_DIR_CACHE . $aFile['name']))
					{
						Phpfox::getLib('file')->delete_directory(PHPFOX_DIR_CACHE . $aFile['name']);
					}
					else 
					{
						unlink(PHPFOX_DIR_CACHE . $aFile['name']);

						$this->removeInfo(PHPFOX_DIR_CACHE . $aFile['name']);
					}
				}
			}						

			return true;
		}		

		switch($type)
		{
			case 'substr':
				$dir = PHPFOX_DIR_CACHE . (is_array($name) ? rtrim($name[0], '/') . PHPFOX_DS : '');
				if (!PHPFOX_SAFE_MODE && !PHPFOX_OPEN_BASE_DIR && !is_dir($dir))
				{
					Phpfox::getLib('file')->mkdir($dir, true, 0777);
				}

				$files = Phpfox::getLib('file')->getFiles($dir);
				$count = strlen((is_array($name) ? $name[1]: $name));				
				foreach ($files as $file)
				{
					if (substr($file, 0, $count) != (is_array($name) ? $name[1]: $name))
					{
						continue;
					}

					if (is_dir($dir . $file))
					{
						Phpfox::getLib('file')->delete_directory($dir . $file);
					}
					else 
					{
						unlink($dir . $file);
					}

					$this->removeInfo($dir . $file);
				}
			break;

			case 'path':
				if (file_exists($name))
				{					
					unlink($name);
					
					$this->removeInfo($name);
				}				
			break;

			default:
				if (is_array($name))
				{
					$name[0] = rtrim($name[0], '/');
					if ($name[0] == 'feed' | $name[0] == 'feed_mobile')
					{
						$name[0] = $name[0] . '_' . Phpfox::getLib('locale')->getLangId();
					}

					$name = $name[0] . PHPFOX_DS . $name[1];
				}

				$name = $this->_getName($name);
				if (file_exists($name))
				{					
					unlink($name);

					$this->removeInfo($name);
				}
			break;
		}

		return true;
	}

	public function isCached($id, $time = 0)
	{
		if (Phpfox::getParam('core.cache_skip'))
		{
			return false;
		}		

		if (isset($this->nameArray[$id]) && file_exists($this->_getName($this->nameArray[$id])))
		{
			if ($time && (PHPFOX_TIME - $time * 60) > (filemtime($this->_getName($this->nameArray[$id]))))
			{
				$this->remove($this->nameArray[$id]);

				return false;
			}			

			return true;
		}

		return false;
	}	

	public function getCachedFiles($aConds = array(), $sSort, $iPage, $sLimit)
	{
		$iCnt      = 0;
		$aRows     = array();
		$iSize     = 0;
		$files    = Phpfox::getLib('file')->getAllFiles(PHPFOX_DIR_CACHE);
		$iLastFile = 0;
		foreach ($files as $file)
		{
			$iSize += filesize($file);
			$iCnt++;

			if (filemtime($file) > $iLastFile)
			{
				$iLastFile = filemtime($file);
			}
		}

		$this->_aStats = array(
			'total' => $iCnt,
			'size'  => $iSize,
			'last'  => $iLastFile
		);

		return array($iCnt, $aRows);
	}	

	private function _getName($file)
	{
		if ($this->_getParam('free'))
		{
			return $file;
		}
		else if ($this->_getParam('path'))
		{
			return $file;
		}

		return PHPFOX_DIR_CACHE . (Phpfox::getParam('core.cache_add_salt') ? md5(Phpfox::getParam('core.salt') . $file) : $file) . Phpfox::getParam('core.cache_suffix');
	}	
}