my $sql_ins_log = "insert into download_log (download_id,status,update_time)" 
                . " values(?,getValueByMeaning('$status_meaning','17'),?)";

##</code><code>##

my $sql_ins_log = "insert into download_log (download_id,status,update_time)" 
                . " values(?,?,?)";
foreach(@X){
  $now = localtime->mysql_datetime;
  $sth = $dbh->prepare($sql_ins_log);
  $sth->execute($download_id,getValueByMeaning('$status_meaning','17'),$now);
}

##</code><code>##

insert into download_log (download_id,status,update_time) values(1,getValueByMeaning('DONE',17'),'2014-09-15 14:16:00')