my @fields = $INPUT->param('titles');
foreach my $f (@fields) {
          #do something with $f...
}

##</code><code>##

	my $title = $INPUT->param("titles")[5];

##</code><code>##

	my $title = @{$INPUT->param("titles")}[5];

##</code><code>##

my @fields = $INPUT->param('titles');
my $title = $fields[5];