use warnings; # needs 5.6.0 or newer,
# $^W = 1;    # for older
use strict;

##</code><code>##

sub search_database {
    my $database = shift;
    my @search_for = map {qr/$_/i} @_;
    my @results;
    open(DB, $database) or die 'Error opening file: ', $!;
    while (<DB>) {
        my @record = split /::/;
        push @results, [@record]
            if grep {
                     $record[5]   # or whichever
                       =~ /$_/i;  # /o taken care of by qr
            } @search_for;
    }
    close DB or die $!;
    \@results;
}