How can I insert a post into wordpress and associate it with a category?

Question

I have content from elsewhere that I would like to insert as a post in Wordpress and then associate with an existing category. It is pretty straightforward to insert a new post into the wp_posts table, but I can't seem to figure out how to construct a query to both insert a new post and at the same time associate the post with a category. How would one go about doing this?

If it helps, I am using WordPress 2.8

Solution 1

Categories are stored in the wp_terms tables, with a cross-reference between wp_posts and wp_terms stored in the wp_term_relationships table.

So, you would first need to insert your post into the wp_posts table, and then for each of the existing categories that you want to associate it with, insert a record into the wp_term_relationships table.

More info here: WordPress Database Description

Solution 2

use the wp_insert_post function then use the wp_set_post_categories function

http://codex.wordpress.org/Function_Reference for usage information