diff --git a/system/drivers/DB_odbc.php b/system/drivers/DB_odbc.php
index a32e9e0..cdd2f45 100644
--- a/system/drivers/DB_odbc.php
+++ b/system/drivers/DB_odbc.php
@@ -107,7 +107,7 @@
* @access public
* @return bool
*/
- function trans_begin()
+ function trans_begin($test_mode = FALSE)
{
if ( ! $this->trans_enabled)
{
@@ -120,6 +120,11 @@
return TRUE;
}
+ // Reset the transaction failure flag.
+ // If the $test_mode flag is set to TRUE transactions will be rolled back
+ // even if the queries produce a successful result.
+ $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+
return odbc_autocommit($this->conn_id, FALSE);
}