#!/usr/bin/perl -w
use strict;
use Data::Dumper;
use JSON;
use PHP::Serialization qw(serialize unserialize);

my $json_text ='{ "boolean": true }';
my $json_text_decoded = decode_json $json_text;
serialize($json_text_decoded);
##</code><code>##

Not a HASH reference at lib/PHP/Serialization.pm line 454.