function getChats($dbh)
{
$stmt = $dbh->prepare("select * from " . chat::$table_name . " ORDER BY id desc limit 100");
$stmt->execute();
$result = array();
while ($row = $stmt->fetch()) {
$p = new chat();
$p->copyFromRow($row);
$result[] = $p;
}
return $result;
}
