24 $res = $db->prepare("SELECT identity FROM pending_tc WHERE mac_addr=?");  variable
25 $res->execute(array($addr));
26 $row = $res->fetch();
38    $res = $db->prepare("UPDATE users SET t_c_timestamp=? WHERE identity=?");  variable
39    if (!$res->execute(array($t_c_timestamp, $identity))) {
43    $res = $db->prepare("DELETE FROM pending_tc WHERE mac_addr=?");  variable
44    $res->execute(array($addr));
57 …$res = $db->prepare("SELECT waiting_coa_ack,coa_ack_received FROM current_sessions WHERE mac_addr=…  variable
58       $res->execute(array($addr));
59       $row = $res->fetch();
67       $res->closeCursor();