Considering the data you need, there is no way for you to avoid storing the phone numbers, then outputing them when you find the reason. You could leave the elements (and just these elements) in the tree though, by using twig_roots to get the twig built only for them:

#!/usr/bin/perl

use strict;
use warnings;

use XML::Twig;

XML::Twig->new( # the twig will only contain PHONENO/ENTRY and REASON/
+ENTRY elements
                # (plus the root or it would not be a tree)
                twig_roots => { 'BL_USER/PHONENO/ENTRY' => 1,         
+     
                                'BL_DPLI_RECORD/REASON/ENTRY' => \&rea
+son,
                              }
               )
         ->parsefile( 'phone_data.xml');

sub reason
  { my( $t, $reason)= @_;
    foreach my $phone_no ($reason->prev_siblings)
      { print $phone_no->text, ";", $reason->text, "\n"; }
    $t->purge;
  }

[download]

In reply to Re^2: Confusion ,XML::SIMPLE with DATA:DUMPER by mirod
in thread Confusion ,XML::SIMPLE with DATA:DUMPER by ultibuzz

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