Try this simple cgi to show the benefit of using Dumper.

#!perl
# Dumper demo cgi
use strict;
use Data::Dumper;

print "Content-Type: text/html\n\n";
print '<pre>';

my $ref = [ { ID => 'ABC'},{ ID => 'DEF'},{ ID => 'GHI'} ];
print '<h2>$ref</h2>';
print Dumper $ref;
print '<hr/>';

my @array = map { $_->{ID} } @$ref;
print '<h2>@array</h2>';
print Dumper @array;
print '<hr/>';

my @error = @array."\n";
print '<h2>@error</h2>';
print Dumper @error;
print '<hr/>';
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Also, note how map could be used to replace this code in search_item()

my @array = @$resultsRef
foreach my $hit (@array) {
  # $hit is a hash reference.
  my %hash = %$hit;
  push @searched, $hash{ID};
}
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