I want to be able to understand the standard function description that is provided for Wordpress functions. In particular, could someone explain the following example from here:
Usage
<?php wp_list_categories( $args ); ?>
Default Usage
<?php $args = array(
'show_option_all' => ,
'orderby' => 'name',
'order' => 'ASC',
'show_last_update' => 0,
'style' => 'list',
'show_count' => 0,
'hide_empty' => 1,
'use_desc_for_title' => 1,
'child_of' => 0,
'feed' => ,
'feed_type' => ,
'feed_image' => ,
'exclude' => ,
'exclude_tree' => ,
'include' => ,
'current_category' => 0,
'hierarchical' => true,
'title_li' => __( 'Categories' ),
'number' => NULL,
'echo' => 1,
'depth' => 0 ); ?>
I can guess most of it, but in particular I can't guess:
What does blank after the comma mean? Empty string?
What is the __?
How do I call the function? Keyword like python, positional arguments or do I have to pass an array?
Is there anything else about Wordpress function descriptions which isn't covered in this example?
Thanks,
Chris
