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  1. or download this
    my $q = CGI->new();
my $params = $q->Vars;
print $params->{'foo'}; # one
  2. or download this
    my $q = CGI->new();
my %params = $q->Vars;
print $params{'foo'}; # one
  3. or download this
    my $q = CGI->new();
my %hash = $q->Vars();
...
    my $values = $hash{$key};
    $hash{$key} = [ split /\0/, $values ];
}