use CGI qw(:standard);
use CGI::Carp qw(fatalsToBrowser);

use DBI;
use DBIx::XHTML_Table;

print header(), start_form();

my $DBH = DBI->connect(
   qw(DB CONNECT INFO HERE),
   {RaiseError => 1, AutoCommit => 1}
);

if (param('go')) {
   my %hash;
   foreach (param()) {
      my ($pk,$field) = $_ =~ /_(\d+)=(\w+)/;
      next unless $pk;
      $hash{$pk}->{$field} = param($_);
   }

   while (my($pk,$row) = each %hash) {
      $DBH->prepare(
         'update <INSERT_TABLE_NAME> set ' . 
         join(',', map {"$_=?"} keys %$row) . 
         ' where id=?'
      )->execute((values %$row),$pk);
   }
}

my $table = DBIx::XHTML_Table->new($DBH) or die 'whoops';

$table->set_pk(<INSERT_PK_NAME>);
$table->exec_query('select * from <INSERT_TABLE_NAME>');

$table->map_cell(sub {
   my $datum = shift;
   my $row   = $table->get_current_row();
   my $col   = $table->get_current_col();
   return qq|<input type="text" name="_$row=$col" value="$datum">|;
});

print $table->output(), submit(-name=>"go"), 
   end_form(), end_html();

$DBH->disconnect();