A detailed description of the use of classification function wp_list_categories in WordPress, wplistcategories_php tutorial

A detailed description of the use of classification function wp_list_categories in WordPress, wplistcategories

Wp_list_categories function is used in WordPress to list the classification of the function of the system, the function has a lot of control output parameters, and today suddenly a friend asked, so I probably tidied up a bit.

Because of the built-in gadget feature in WordPress,
So we can show a category list in the sidebar or anywhere else we want without any function,
So the wp_list_categories function is seldom used by anyone,
The function is somewhat similar to Wp_list_bookmarks,

Wp_list_categories description
The Wp_list_categories function is a function used in WordPress to list the classified links in the system.
English is not in the original, interested can go to look at the official documents.

Usage

<?php wp_list_categories ($args);  $args = Array (' show_option_all ' = ' + ',//whether to list the category link ' order ' = ' = ' name ',//by name order ' = ' ASC ',//L, descending ' Style ' = ' list ',//whether to use the list (Ul>li) ' show_count ' = = 0,//whether to show the number of articles ' Hide_empty ' + 1,//show no log category ' Us E_desc_for_title ' + 1,//whether to show the category description ' child_of ' and 0,//whether to restrict sub-classification ' feed ' + ',//whether to show RSS ' Feed_type ' =& Gt ",//rss type ' feed_image ' + '",//whether to show RSS images ' exclude ' + ',//exclude category ID, multiple uses ', (comma) ' delimited ' exclude_tree ' =  ',///Exclude the classification tree, that is, the parent category and its sub-category ' Include ' = ', '//Includes the category ' Hierarchical ' and true,//whether the child, parent classification rating ' Title_li ' + __ ( ' Categories '),//The name of the list title ' Show_option_none ' + __ (' no Categories '),//No category displayed when the title ' Number ' = null,//show the quantity of the classification ' E     Cho ' + 1,//show, show or return string ' depth ' = 0,//level limit ' current_category ' + 0,//add a no category ' Pad_counts ' = 0,//This I do not understand the ' taxonomy ' and ' category ',//Use the taxonomy ' Walker ' and null//to display the class (very complicated concept)? &Gt 

About ' pad_counts ', I don't understand what this parameter is for,
If you are interested, you can study the official documentation for this parameter.
You can also use it against the wp_list_bookmarks.

Pad_counts (Boolean) calculates link or post counts by including items from child categories. If show_counts and hierarchical are true the This is automatically set to true. This parameter added at Version 2.9 Valid values:1 (True) 0 (false) –default

Working with instances
Show category links that include ID 3,5,9,16, sorted by name

 
  
  

   
   
  <?php wp_list_categories (' orderby=name&include=3,5,9,16 ');?> 
 
  
  

Displays a list of categories with poetry as headings, including ID 5,9,23

 
  
  

   
   
  <?php wp_list_categories (' include=5,9,23&title_li=
  
   
   
' . __ (' poetry '). '
');?> 
 
  
  

Of course you can also write parameters such as the following to integrate the parameters into an array.

<?php $taxonomy   = ' genre '; $orderby   = ' name '; $show _count  = 0;   1 for Yes, 0 for no$pad_counts  = 0;   1 for Yes, 0 for no$hierarchical = 1;   1 for Yes, 0 for no$title    = "; $args = Array (' taxonomy ' = = $taxonomy, ' by ' = ') ' and   $orderby, ' Show_ Count '  = ' = $show _count, ' pad_counts ' +  $pad _counts, ' hierarchical ' + $hierarchical, ' Title_li '   = $title);? > 
 
  
  

   
   
  <?php wp_list_categories ($args);?>
 
  
  

The taxonomy taxonomy is a concept that is relative to the label (tag).

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