lib/fal/metafilestorage.php
protected function getCacheHash($file)
	{
		$fs_class = explode('\\', get_class($this->fs));
		return $this->f3->hash($this->f3->stringify($file)).
			'.'.strtolower(array_pop($fs_class)).'.meta';
	}
protected function getCacheHash($file)
	{
		$fs_class = explode('\\', get_class($this->fs));
		return $this->f3->hash($this->f3->stringify($file)).
			'.'.strtolower(array_pop($fs_class)).'.meta';
	}
protected function getCacheHash ( $ file ) { $ fs_class = explode ( '\\' , get_class ( $ this -> fs ) ) ; return $ this -> f3 -> hash ( $ this -> f3 -> stringify ( $ file ) ) . '.' . strtolower ( array_pop ( $ fs_class ) ) . '.meta' ; }
return cache key
@param $file
@return string
return cache key