my $parser = XML::LibXML->new();
my $doc = $parser->parse_file("main_file.XML");
my $doc1 = $parser->parse_file("second_file.XML");

my @nodes_from_main= $doc0->findnodes('//path/to/element/text()');
my @nodes_from_second = $doc1->findnodes('//path/to/element/text()');

##</code><code>##


for my $node_main (@nodes_from_main)
{   
   for my $node_second (@nodes_from_second)  
   if (text from main equal text from second, "which I did already")
  {
     <p> print my matching node from the second file;<br> 
      How to do this part</p>
  }
  esle
  {
    do nothing;
  }
}

##</code><code>##

<doc>
<id>
   <elements>
   <element1>matching text</element1>
   <element2>other text</element2>
   <element3>other text</element3>
   </elements>
</id>
</doc>
<p>I need to print everything within elements </p>