At first you do not check for existence of a second element of an array, but check it's truth.
You can rewrite it like this: 

foreach my $entry ($result->all_entries()) {
    foreach ( $entry->attributes() ) {
        my $ra = [ $entry->get_value($_) ];
        $r->{$entry->dn()}->{$_} = @$ra > 1 ? $ra : $ra->[0];
    }
}

[download]

Update: lexical $r renamed to $ra

In reply to Re: Returning single or multiple values? by ccn
in thread Returning single or multiple values? by sschneid

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