To get the category object use get_category (codex). It’s easy if you know the name, slug or ID, but if you don’t you could use is_category to check on which category you are and pass the ID to get_category.
Some post-related data is not available to get_posts by default, such as post content through the_content(), or the numeric ID. This is resolved by calling an internal function setup_postdata(), with the $post array as its argument: <?php $args = array( ‘posts_per_page’ => 3 ); $lastposts = get_posts( $args ); foreach ( $lastposts as $post ) … Read more
Try this code. $author = get_user_by( ‘slug’, get_query_var( ‘author_name’ ) ); echo $author->ID; Alternatively, if author name has not been set use: if ( $author_id = get_query_var( ‘author’ ) ) { $author = get_user_by( ‘id’, $author_id ); } credit @AndyAdams in the easily missed comments bellow
When your going through your loop add this: global $post; $post = get_post( $ID, OBJECT ); setup_postdata( $post ); //Do something wp_reset_postdata();