sanitize_post_field()
Sanitizes a post field based on context.
WordPress File wp-includes/post.php
set_post_thumbnail()
Sets the post thumbnail (featured image) for the given post.
set_post_type()
Update the post type for the post ID.
stick_post()
Make a post sticky.
trackback_url_list()
Do trackbacks for a list of URLs.
unregister_post_meta()
Unregisters a meta key for posts.
unregister_post_type()
Unregisters a post type.
unstick_post()
Un-stick a post.
update_attached_file()
Update attachment file path based on attachment ID.
update_post_cache()
Updates posts in cache.