Suppose you want to show a category / subcategory “tree like” list on a WordPress page that gets the posts from a certain “main” category.
The following code, probably will be useful.
//# first of all, you need to get the category array, // and I did it, putting the line bellow inside the loop $category = get_the_category(get_the_ID()); // once you have the category array, the rest of the code will work wherever you want on the page //# getting the main category of the page $catid=$category[0]->category_parent; if($catid==0){ $catid=$category[0]->cat_ID; } //# now letz get the children categories of the main category $categories = get_categories('child_of='.intval($catid)); foreach ($categories as $category) { //# check if it is a real parent category with subcategories if ($category->parent ==$catid): echo '<span><a href="">'.$category->cat_name.'</a></span>'; //# here we go, getting the subcategories $subcategories= get_categories('child_of='.intval($category->cat_ID)); foreach ($subcategories as $subcategory) { echo '<span style="padding-left:12px">'; echo '<a href="">'.$subcategory->cat_name.'</a></span>'; } endif; }
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http://www.wpworking.com/the-basics/displaying-categories-and-subcategories-tree-on-wordpress/
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how to start wordpress?
You can search for Beginner’s Guide for WordPress on google and start learning WordPress.