Close #4313
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 25e70ec..bfe9dd4 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -505,6 +505,18 @@
// --------------------------------------------------------------------
/**
+ * Last error
+ *
+ * @return array
+ */
+ public function error()
+ {
+ return array('code' => NULL, 'message' => NULL);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Set client character set
*
* @param string