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1. metepyers
   Member
   Posted 11 months ago #

   I want to get the categories listed in hierarchical order. But this code is returning my categories in alphabetical order, and ignoring the hierarchy. Any help?

   $categories = get_categories("hierarchical=1");
   foreach ($categories as $cat) {
   	echo "<p>".$cat->cat_name."</p>";
   }

   I'm pretty confident that this code is correct. I'm tempted to call this a bug. I've also tried:

   $categories = get_categories("hierarchical=true");
   foreach ($categories as $cat) {
   	echo "<p>".$cat->cat_name."</p>";
   }

   and:
   

   $parameters = array('type' => 'post',
   	'orderby' => 'name',
   	'order' => 'ASC',
   	'hide_empty' => false,
   	'include_last_update_time' => false,
   	'hierarchical' => 1,
   	'pad_counts' => false);
   $categories = get_categories($parameters);
   foreach ($categories as $cat) {
   	echo "<p>".$cat->cat_name."</p>";
   }

2. metepyers
   Member
   Posted 11 months ago #

   I really don't understand this. This code does put the categories in hierarchical order:

   $categories = wp_list_categories("hierarchical=1");

   But this doesn't:
   

   $categories = get_categories("hierarchical=1");

   But, I checked, and wp_list_categories is using get_categories itself - so why doesn't it work for me.

   Any help... anyone???

3. garylapointe
   Member
   Posted 11 months ago #

   I've Googled all around on this too. Seems like a pretty simple thing. Seems like the solution would already be posted somewhere :(

4. MichaelH
   moderator
   Posted 11 months ago #

   wp_list_categories uses the walk_category_tree to set the hierarchy after it call get_categories to retrieve all the categories. Look at wp_list_categories function in wp-includes/category-template.php to see that.

   Don't forget the echo=0 ability of wp_list_categories to return then list of categories instead of display them.

5. garylapointe
   Member
   Posted 11 months ago #

   MichaelH,

   So are you saying we can somehow use wp_list_categories (instead of get_categories) and have it sort the list for us properly? Similar to @metepyers first example?

   Can you help with the passing of the parameters? I'm note sure if I need echo=0, echo='0', echo="0", "echo=0", $echo=0, etc... (And obviously we need it hierarchical). I haven't played with parameters much and just can't get this...

   Thank you,
   Gary

6. MichaelH
   moderator
   Posted 11 months ago #

   Sorry, I should have pointed to the documentation on that:

   wp_list_categories()

7. garylapointe
   Member
   Posted 11 months ago #

   Thanks! That'll keep me busy reading for a bit!

8. DavidPotter
   Member
   Posted 7 months ago #

   So how do I get a collection of category objects that are sorted so that child categories always come after their parent? Is this something I have to write myself?

   Thanks,
   David

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