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1. mercuryfenix
   Member
   Posted 2 years ago #

   I want a multi-dimensional array of my categories.
   

   function get_category_array()
   {
   	$args = array(
   		'type'                     => 'post',
   		'child_of'                 => 0,
   		'hide_empty'               => false,
   		'hierarchical'             => true,
   		'exclude'                  => '1'
   	);
   
   	return get_categories($args);
   }

   The above function is returning a "flat" list of all of the categories like this (instead of a parent->child->grandchild->etc.. array)

   Array
   (
       [0] => stdClass Object
           (
               [term_id] => 210
               [name] => Cat 1 Name
               [slug] => cat-1-name
               [term_group] => 0
               [term_taxonomy_id] => 211
               [taxonomy] => category
               [description] =>
               [parent] => 208
               [count] => 0
               [cat_ID] => 210
               [category_count] => 0
               [category_description] =>
               [cat_name] => Cat 1 Name
               [category_nicename] => cat-1-name
               [category_parent] => 208
           )
   
       [1] => stdClass Object
           (
               [term_id] => 234
               [name] => Cat 2 Name
               [slug] => cat-2-name
               [term_group] => 0
               [term_taxonomy_id] => 237
               [taxonomy] => category
               [description] =>
               [parent] => 167
               [count] => 0
               [cat_ID] => 234
               [category_count] => 0
               [category_description] =>
               [cat_name] => Cat 2 Name
               [category_nicename] => cat-2-name
               [category_parent] => 167
           )
   )

   Anybody know why this isn't working?

2. esmi
   Theme Diva & Forum Moderator
   Posted 2 years ago #

   I think get_categories is working correctly. It just didn't return the data in the way that you expected. The hierarchical parameter, as far as I can tell, determines whether the function should return data for empty categories. It doesn't return the data in a multi-dimensional (hierarchical) array. And, yes, I think the parameter name is mis-leading too.

   I suspect you'll need to build your array manually - using get_category_parents and/or cat_is_ancestor_of. Unless, of course, someone else comes along and posts a simple solution comprising half a dozen beautiful lines. :-)

3. coombesy
   Member
   Posted 2 years ago #

   here you go ;)
   

   function get_cat_hierchy($parent,$args){
   
   	$cats = get_categories($args);
   	$ret = new stdClass;
   
   	foreach($cats as $cat){
   		if($cat->parent==$parent){
   			$id = $cat->cat_ID;
   			$ret->$id = $cat;
   			$ret->$id->children = get_cat_hierchy($id,$args);
   		}
   	}
   
   	return $ret;
   }

4. coombesy
   Member
   Posted 2 years ago #

   ... for those non coders call the function like this

   $args = array(
   		'type'                     => 'post',
   		'child_of'                 => 0,
   		'hide_empty'               => false,
   		'hierarchical'             => true,
   		'exclude'                  => '1'
   	);

   or whatever args you need as per get_categories func

   and pass those and the id of the root category you want, and viola.

   eg.
   print_r(get_cat_hierchy(0,$args))
   will print out all cats

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