added reconnect() method to db drivers
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index 6558112..74cfff4 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -91,6 +91,25 @@
// --------------------------------------------------------------------
/**
+ * Reconnect
+ *
+ * Keep / reestablish the db connection if no queries have been
+ * sent for a length of time exceeding the server's idle timeout
+ *
+ * @access public
+ * @return void
+ */
+ function reconnect()
+ {
+ if (mysqli_ping($this->conn_id) === FALSE)
+ {
+ $this->conn_id = FALSE;
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Select the database
*
* @access private called by the base class