Title: how to convert this code?
Last modified: August 21, 2016

---

# how to convert this code?

 *  Resolved [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/)
 * The code below pulls child categories of a parent, works perfectly.
 * Still i want to use this type of solution for TAXONOMIES, any ideas how to convert
   this?
 *     ```
       <?php
       global $ancestor;
       $childcats = get_categories('child_of=' . $cat . '&hide_empty=1');
       foreach ($childcats as $childcat) {
         if (cat_is_ancestor_of($ancestor, $childcat->cat_ID) == false){
           echo '<a class="trick product-search-item" href="'.get_category_link($childcat->cat_ID).'">';
   
       	echo '<img src=';
       	echo z_taxonomy_image_url($childcat->term_id);
       	echo '>';
       	echo '<div class="icon"></div>';
       	echo '<span>';
       	echo $childcat->cat_name . '</span>';
           echo '</a>';
           $ancestor = $childcat->cat_ID;
         }
       }
       ?>
       ```
   

Viewing 13 replies - 1 through 13 (of 13 total)

 *  Moderator [bcworkz](https://wordpress.org/support/users/bcworkz/)
 * (@bcworkz)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908488)
 * All the category functions have generic term equivalents, such as `get_terms(),
   term_is_ancestor_of(), get_term_link()` etc. You need to do more than rename 
   functions because the generic term functions all take more parameters, namely
   the taxonomy the term is in. There could be other differences, so check the Codex
   page for every function you convert.
 *  Thread Starter [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908513)
 * Already tried that, maybe i am missing something?
 * The converted code:
 *     ```
       <?php
       global $ancestor;
       $childcats = get_terms('child_of=' . $cat . '&hide_empty=1');
       foreach ($childcats as $childcat) {
         if (term_is_ancestor_of($ancestor, $childcat->cat_ID) == false){
           echo '<a class="trick product-search-item" href="'.get_term_link($childcat->cat_ID).'">';
   
       	echo '<img src=';
       	echo z_taxonomy_image_url($childcat->term_id);
       	echo '>';
       	echo '<div class="icon"></div>';
       	echo '<span>';
       	echo $childcat->cat_name . '</span>';
           echo '</a>';
           $ancestor = $childcat->cat_ID;
         }
       }
       ?>
       ```
   
 * Shows this error:
 *     ```
       Warning: Missing argument 3 for term_is_ancestor_of(), called in URL on line 23 and defined in D:\zEasyPHP-DevServer\data\localweb\decor\wp-includes\taxonomy.php on line 1542
   
       Catchable fatal error: Object of class WP_Error could not be converted to string in D:\zEasyPHP-DevServer\data\localweb\decor\wp-content\themes\dd\taxonomy-parchet-cats.php on line 24
       ```
   
 *  Moderator [bcworkz](https://wordpress.org/support/users/bcworkz/)
 * (@bcworkz)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908546)
 * You need to specify the taxonomy to which the terms belong as the missing 3rd
   argument.
 * The second error is because you have no error checking code for the return of
   a function, so you are probably trying to echo out a WP_Error object. Ideally
   you should insert error handling script, but eliminating the cause of the error
   could suffice if all input is managed such that another error is highly unlikely.
 *  Thread Starter [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908547)
 * tried this but failed:
 *     ```
       <?php
       global $ancestor;
       $childcats = get_terms('parchet-cats', 'child_of=' . $cat . '&hide_empty=1');
       foreach ($childcats as $childcat) {
         if (cat_is_ancestor_of($ancestor, $childcat->term_id) == false){
           echo '<a class="trick product-search-item" href="'.get_term_link($childcat->term_id, 'parchet-cats').'">';
   
           echo '<img src=';
           echo z_taxonomy_image_url($childcat->term_id);
           echo '>';
           echo '<div class="icon"></div>';
           echo '<span>';
           echo $childcat->term_name . '</span>';
           echo '</a>';
           $ancestor = $childcat->term_id;
         }
       }
       ?>
       ```
   
 * Shows this error:
 *     ```
       Catchable fatal error: Object of class WP_Error could not be converted to string in D:\zEasyPHP-DevServer\data\localweb\decor\wp-content\themes\dd\taxonomy-parchet-cats.php on line 24
       ```
   
 * Can you enlight me where i wrong?
 *  Thread Starter [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908549)
 * LOL i’m not good at this
 *  [Zahlan](https://wordpress.org/support/users/elzahlan/)
 * (@elzahlan)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908558)
 * ok I had updated your code, try it and tell if it works or not:
 *     ```
       <?php
       global $ancestor;
       $childcats = get_terms('parchet-cats', 'child_of=' . $cat . '&hide_empty=1');
       foreach ($childcats as $childcat) {
         if (cat_is_ancestor_of($ancestor, $childcat->term_id) == false){
           echo '<a class="trick product-search-item" href="'.get_term_link($childcat->slug, 'parchet-cats').'">';
   
           echo '<img src=';
           echo z_taxonomy_image_url($childcat->term_id);
           echo '>';
           echo '<div class="icon"></div>';
           echo '<span>';
           echo $childcat->name . '</span>';
   
           echo '</a>';
           $ancestor = $childcat->term_id;
         }
       }
       ?>
       ```
   
 *  Thread Starter [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908560)
 * closer, but shows all categories, not child of parent
 * here: [http://s14.postimg.org/ixy27qtsx/pic1.png](http://s14.postimg.org/ixy27qtsx/pic1.png)
   
   and here: [http://s14.postimg.org/kyolskpy9/pic2.png](http://s14.postimg.org/kyolskpy9/pic2.png)
 *  Thread Starter [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908658)
 * trying final code
 *  Thread Starter [cipriano200](https://wordpress.org/support/users/cipriano200/)
 * (@cipriano200)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908665)
 * THIS CODE WORKED
 *     ```
       <?php
       global $ancestor;
       $cat = $wp_query->queried_object->term_id;
       $childcats = get_terms('parchet-cats', 'parent=' . $cat . '&hide_empty=1');
       foreach ($childcats as $childcat) {
         if (cat_is_ancestor_of($ancestor, $childcat->term_id) == false){
           echo '<a class="trick product-search-item" href="'.get_term_link($childcat->slug, 'parchet-cats').'">';
   
           echo '<img src=';
           echo z_taxonomy_image_url($childcat->term_id);
           echo '>';
           echo '<div class="icon"></div>';
           echo '<span>';
           echo $childcat->name . '</span>';
           echo '</a>';
           $ancestor = $childcat->term_id;
         }
       }
       ?>
       ```
   
 *  [christedor](https://wordpress.org/support/users/christedor/)
 * (@christedor)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908693)
 * how to display category parents only of an taxonomy in archive-{taxonomy-slug}.
   php
 * ?
 *  Moderator [bcworkz](https://wordpress.org/support/users/bcworkz/)
 * (@bcworkz)
 * [12 years ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908706)
 * [@christedor](https://wordpress.org/support/users/christedor/) – I’m not sure
   what you are actually asking for. Display posts belonging to category parent 
   or just show the category parent as a label, or as a link to the corresponding
   archive? What of the current category posts? Still displayed? Mixed in with parent
   posts? Only show parent posts? There’s many possibilities, you’ll need to be 
   very specific.
 * FYI, adding on to existing topics is not allowed in these forums. Please start
   a new topic and fully describe what you are trying to accomplish.
 *  [christedor](https://wordpress.org/support/users/christedor/)
 * (@christedor)
 * [12 years ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908707)
 * [@bcworkz](https://wordpress.org/support/users/bcworkz/)
 * I have a custom post type named, “Countries”
    Taxonomy is called “Countries-categories”
 * I want to display only parent categories of taxonomy “countries-categories” in
   my archive-countries.php
 * So my archive page will look like this:
    Europe -country1 -country2 Asia -country1-
   country2 Africa -country1 -country2
 * ETC..
 * Then after the that taxonomy-countries-categories.php will do its thing with 
   the last code “cipriano200” posted, also that code displays image for category,
   with CATEGORIES IMAGES PLUGIN, so i want that to.
 * Sorry if i broke the rules, but this topic is close in what i need.
 *  [christedor](https://wordpress.org/support/users/christedor/)
 * (@christedor)
 * [12 years ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908713)
 * i solved the problem somehow

Viewing 13 replies - 1 through 13 (of 13 total)

The topic ‘how to convert this code?’ is closed to new replies.

 * In: [Hacks](https://wordpress.org/support/forum/plugins-and-hacks/hacks/)
 * 13 replies
 * 4 participants
 * Last reply from: [christedor](https://wordpress.org/support/users/christedor/)
 * Last activity: [12 years ago](https://wordpress.org/support/topic/how-to-convert-this-code/#post-4908713)
 * Status: resolved

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