wp_get_recent_posts()
Retrieve a number of recent posts.
WordPress File wp-includes/post.php
wp_insert_attachment()
Insert an attachment.
wp_insert_post()
Insert or update a post.
wp_match_mime_types()
Check a MIME-Type against a list.
wp_mime_type_icon()
Retrieve the icon for a MIME type or attachment.
wp_post_mime_type_where()
Convert MIME types into SQL.
wp_publish_post()
Publish a post by transitioning the post status.
wp_queue_posts_for_term_meta_lazyload()
Queues posts for lazy-loading of term meta.
wp_resolve_post_date()
Uses wp_checkdate to return a valid Gregorian-calendar value for post_date.
wp_set_post_categories()
Set categories for a post.