Removed closing PHP tags, replaced with a comment block identifying the end of the file
diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php
index 982725a..21113af 100644
--- a/system/database/DB_cache.php
+++ b/system/database/DB_cache.php
@@ -186,4 +186,6 @@
 

 }

 

-?>
\ No newline at end of file
+
+/* End of file DB_cache.php */
+/* Location: ./system/database/DB_cache.php */
\ No newline at end of file