Detect taxonomy term loops in Drupal 6

gistfile1.aw

<?php
/**
 * Detect taxonomy term loops in Drupal 6
 * http://davidherron.com/content/save-your-server-detect-taxonomy-term-loops-drupal-6
 */

$result = db_query('SELECT tid, name FROM {term_data}');
while ($term = db_fetch_object($result)) {
  drush_print( '>>> '. $term->name);
  $parents  = safe_get_parents_all($term->tid);
  $related  = taxonomy_get_related($term->tid);
  $synonyms = taxonomy_get_synonyms($term->tid);
  drush_print( $term->name .'('. $term->tid .'): parents='. count($parents) .' related='. count($related) .' synonyms='. count($synonyms));
}
 
 
function safe_get_parents_all($tid) {
    $parents = array();
    if ($tid) {
        $parents[] = taxonomy_get_term($tid);
        $n = 0;
        while ($parent = taxonomy_get_parents($parents[$n]->tid)) {
            foreach ($parent as $p) {
                if (! parents_has_term($parents, $p)) {
                    array_push($parents, $p);
                    //drush_print_r('... '. count($parents));
                } else {
                    drush_print_r('DETECTED LOOP tid='. $tid .' has parent '. $p->tid .' multiple times');
                    drush_print_r($parents);
                }
            }
            $n++;
        }
    }
    return $parents;
}
 
function parents_has_term($parents, $term) {
    foreach ($parents as $p) {
        if ($p->tid === $term->tid) {
            return TRUE;
        } else {
            return FALSE;
        }
    }
}