PHP/HTML/tidy parse file

Beautifying HTML Using Tidy

 
<?php
      $options = array("indent" => true,       
                       "indent-spaces" => 4,   
                       "wrap" => 4096);        
      $tidy = tidy_parse_file("http://www.php.net/", $options);
      tidy_clean_repair($tidy);
      echo $tidy;
?>

Extracting URLs Using Tidy

 
<?php
      function dump_urls(tidy_node $node, &$urls = NULL) {
            $urls = (is_array($urls)) ? $urls : array();
            if(isset($node->id)) {
                  if($node->id == TIDY_TAG_A) {
                        $urls[] = $node->attribute["href"];
                  }
            }
            if($node->hasChildren()) {
                  foreach($node->child as $child) {
                        dump_urls($child, $urls);
                  }
            }
                       return $urls;
      }
      $tidy = tidy_parse_file("http://www.php.net/");
      $urls = dump_urls($tidy->body());
      print_r($urls);
?>

Reducing Bandwidth Usage Using Tidy

 
<?php
    $options = array("clean" => true,
              "drop-proprietary-attributes" => true,
              "drop-font-tags" => true,
              "drop-empty-paras" => true,
              "hide-comments" => true,
              "join-classes" => true,
              "join-styles" => true);
    $tidy = tidy_parse_file("http://www.php.net/", $options);
    tidy_clean_repair($tidy);
    echo $tidy;
?>

Retrieving an Entrance Node in Tidy

 
<?php
    $tidy = tidy_parse_file("http://www.php.net/");
    $root = $tidy->root();
?>