4 	protected static $cache_dir, $ttl_dir;  variable in memcache_fakecache
18 		$dh = opendir(static::$ttl_dir);
21 			if (file_get_contents(static::$ttl_dir.$file) < time()){
22 				@unlink(static::$ttl_dir.$file);
32 		static::$ttl_dir = $conf['tmpdir'].'/cachewrapper_ttl/'; 
35 		if (!file_exists(static::$ttl_dir)) mkdir(static::$ttl_dir);
36 …elseif (!is_dir(static::$ttl_dir)) trigger_error("The cache directory '".static::$cache_dir."' is …
48 			if ($ttl > 0) 			file_put_contents(static::$ttl_dir.static::normalize_key($key),time()+$ttl);
49 			else 					@unlink(static::$ttl_dir.static::normalize_key($key));
57 			if ($ttl > 0)			file_put_contents(static::$ttl_dir.static::normalize_key($key),time()+$ttl);
58 			else 					@unlink(static::$ttl_dir.static::normalize_key($key));
70 		@unlink(static::$ttl_dir.static::normalize_key($key));
96 		$dh = opendir(static::$ttl_dir);
99 			@unlink(static::$ttl_dir.$file);