Post file and data use LWP::UserAgent.

post_file_and_data.pl

#!/usr/bin/env perl
use strict;
use warnings;
use utf8;

use Encode;
use HTTP::Request::Common;
use LWP::UserAgent;

my $ua = LWP::UserAgent->new;
$ua->agent('FUKATA/1.0 ');
my $data = {
    name = '深田達也',
    description = 'ニートになりたいプログラマ',
    icon => ['/tmp/icon.png'],
};
$data->{$_} = Encode::encode('utf8', $data->{$_}) for qw/name description/;

my $post_url = 'http://localhost/dump.php';
my $res = $ua->request(POST(
    $post_url,
    Content_Type => 'form-data',
    Content => $data,
));

print $res->content;