make sure directory is given
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		| @@ -151,7 +151,7 @@ abstract class FileUtil { | |||||||
| 	 * @return bool | 	 * @return bool | ||||||
| 	 */ | 	 */ | ||||||
| 	public static function cleanDirectory($directory, $maxFileAgeInDays = 10., $recursive = false) { | 	public static function cleanDirectory($directory, $maxFileAgeInDays = 10., $recursive = false) { | ||||||
| 		if (!is_dir($directory) || !is_readable($directory)) { | 		if (!$directory || !is_dir($directory) || !is_readable($directory)) { | ||||||
| 			return false; | 			return false; | ||||||
| 		} | 		} | ||||||
| 		$dirHandle = opendir($directory); | 		$dirHandle = opendir($directory); | ||||||
|   | |||||||
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