获取WordPress文章目录及其链接

获取文章目录使用get_categories，参考文档：http://codex.wordpress.org.cn/Function_Reference/get_categories

获取文章目录的链接使用get_category_link，参考文档：http://codex.wordpress.org.cn/Function_Reference/get_category_link

下面的代码片段演示了如何获得文章顶级目录并及其链接：

function get_root_categories()
{
$args = array(
'type'                     => 'post',
'child_of'                 => 0,
'parent'                   => 0,
'orderby'                  => 'name',
'order'                    => 'ASC',
'hide_empty'               => 1,
'hierarchical'             => 1,
'exclude'                  => '',
'include'                  => '',
'number'                   => '',
'taxonomy'                 => 'category',
'pad_counts'               => false );
$categories = get_categories( $args );
foreach ($categories as $cat)
{
echo "<li><a href=".get_category_link($cat->term_id).">".$cat->name."</a></li>";
}
}

还可以通过默认的模板函数wp_list_categories生成目录列表，参数文档：http://codex.wordpress.org.cn/Template_Tags/wp_list_categories

以下为示例代码：

$args = array(
'show_option_all'    => '',
'orderby'            => 'name',
'order'              => 'ASC',
'style'              => 'list',
'show_count'         => 1,
'hide_empty'         => 1,
'use_desc_for_title' => 1,
'child_of'           => 0,
'feed'               => '',
'feed_type'          => '',
'feed_image'         => '',
'exclude'            => '',
'exclude_tree'       => '',
'include'            => '',
'hierarchical'       => 1,
'title_li'           => __( 'Categories' ),
'show_option_none'   => __('No categories'),
'number'             => null,
'echo'               => 1,
'depth'              => 1,
'current_category'   => 0,
'pad_counts'         => 0,
'taxonomy'           => 'category',
'walker'             => null
);
wp_list_categories( $args );