taxonomy_node_list_terms_by_vocabulary.php

<?php
// convenience theming function for taxonomy lists -- ead 6.10.10
function taxonomy_node_list_terms_by_vocabulary($nid, $voc_id, $link = FALSE, $ul = FALSE) {
  /* loads a "dummy" node in order to use taxonomy_node_get_terms_by_vocabulary()
	   to get an array of taxonomy terms */
  $node = new stdClass();
  $node->vid = db_result(db_query("SELECT MAX(vid) FROM {node_revisions} WHERE nid = %d", $nid));
  $terms = taxonomy_node_get_terms_by_vocabulary($node, $voc_id);
  if(!isset($terms) || !is_array($terms) || empty($terms)) { return ''; }
	
  // collects terms by name from the taxonomy term array
  $term_names = array();
  foreach($terms as $term) {
    $term_names[$term->name] = $term->name;
    $term_names_linked[] = l($term->name, taxonomy_term_path($term), array('attributes' => array('class' => 'taxonomy-term')));
    $term_names_links['taxonomy-term-' . $term->tid] = array('title' => $term->name, 'href' => taxonomy_term_path($term));
  }
  
  // outputs terms in unordered list
  if($ul) {    
    if($link) {
      $term_list = theme_links($term_names_links);
    }
    else {
      $term_list = theme_item_list($term_names, NULL, 'ul', array('class' => 'taxonomy-term')); 
    }
  }
  // outputs terms in comma-delimited list	  
  else {		 
    if($link) {
      $term_list = implode(', ', $term_names_linked);
    }
    else {
      $term_list = implode(', ', $term_names); 
    } 
  }
  
  // only return a $term_list if it doesn't have the empty UrbanMinistryBloggers tag in it
  // note use of ternary operator (http://php.net/manual/en/language.operators.comparison.php)
  $ret = (strpos($term_list, '/taxonomy/term/13797') === FALSE) ? $term_list : '';
  return $ret;
}
?>