this id?

[eluser]smdelektronik[/eluser]
that i use to create multiple accounts,
username have restricted word like "test_user",
so if single account username contains "test_user",
username is restricted.

hope transaction solve problem of same id, or maybe i am wrong?

$this->db->trans_start();
.
//my code
.
$this->db->trans_complete();

thank you for help