&UpdateFromHash($dbh,{'field' => 'new_value','nextfield'=>'new_value'},'tabelle',["field LIKE '%irgendwas%'","field2 = 'value'"],$limit);

sub UpdateFromHash {
    my $DBH      = $_[0]     or &FatalError('DBx0001');
    my %Fields   = %{$_[1]}  or &FatalError('DBx0006',['Fields']);
    my $Table    = $_[2]     or &FatalError('DBx0006',['Table']);
    my @Conds    = @{$_[3]}  or &FatalError('DBx0006',['Conditions']);
    my $Limit    = $_[4];
    my $Statement;

    $Statement  = 'UPDATE '.$Table.' SET '.join (', ',&{sub{my @f;push @f, "$_ = ".$DBH->quote($Fields{$_}) for (keys(%Fields));return @f;}}).
                  ' WHERE '.join (' AND ',@Conds).($Limit?" LIMIT $Limit":"").';';

    if ($DBH->do($Statement)) {
        return 1;
    }
    else {
        &FatalError('DBx0007', [$Statement, $DBH->errstr()]);
    }
}

&UpdateFromHash($CFG{'DBH'},{ 'falselogins' => 'falselogins+1' }, 'users', ["name = '$Username'"],1);