how to pass an array to a perl cgi script with a HTML form?

Question

In a HTML form, if we give names to input boxes with [], like this

<input name="foo[]" type="text" />
<input name="foo[]" type="text" />

In PHP, we can obtain values of these input boxes in an array, with $_POST['foo'].

How to do the similar in Perl? I use CGI.pm

Answer 1

Just assign the result of param to an array.

my @values = param('foo[]');         # If you use the functional-style
my @values = $query->param('foo[]'); # If you use the OO-style of CGI.pm

There's no requirement that the name end with [].

Answer 2

The hot way to do this these days is to post JSON to a CGI. See the docs on the CPAN:

http://search.cpan.org/~makamaka/JSON-2.21/lib/JSON.pm