function() + mysql problem

[eluser]brian.89[/eluser]
solution:

function users($db, $str)
{
$query = $db->db->query("select * from bw_users where id='".$str."'");
if ($query->num_rows() > 0)
{
$row=$query->row();
return $row->username;
}
else
{
return "fatal error";
}
}


....


<?= users($this,$row->sent_id); ?>

$this == database ... i give it to function().

that's work!

thx