What's wrong with using just CGI?

use strict;
use CGI;

my $c=CGI->new();

$c->param('foo'=>'bar');
$c->param('baz'=>'boo');

print $c->url(-query=>1,-relative=>1);

__END__
?foo=bar;baz=boo

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In reply to Re: hash to query string using semicolon by Corion
in thread hash to query string using semicolon by metaperl

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