Index: temp/trunk/html/test/uehara/tree.php
===================================================================
--- temp/trunk/html/test/uehara/tree.php	(revision 8586)
+++ temp/trunk/html/test/uehara/tree.php	(revision 8587)
@@ -105,4 +105,7 @@
 			$bytes = filesize($dir);
 		}
+	} else {
+		// ¥Ç¥£¥ì¥¯¥È¥ê¤¬Â¸ºß¤·¤Ê¤¤¾ì¹ç¤Ï0byte¤òÊÖ¤¹
+		$bytes = 0;
 	}
     return $bytes;