wp-insert-post

You can do this by setting the post_parent with the $attach_id. $my_post = array( ‘ID’ => $attach_id, ‘post_parent’ => $my_post_id //retrieved after you inserted your post ); wp_update_post( $my_post ); Just run this after you have both the ID`s of the Post and the attachment, and you have set the parent of the attachment to … Read more

When inserting a new post, you must omit or leave the ID parameter empty, or the post will not be inserted. You can only set the ID if you are updating an existing post with that ID. See wp_insert_post in Codex for more information.

wp_insert_post() currently doesn’t create a revision for a newly created post. This is a known limitation (or feature?) in WordPress core and has been reported before on WordPress Trac. To work around this, you could try to manually call wp_save_post_revision() after inserting your post.

Use post_name instead of post_slug (post_slug isn’t valid in wp_insert_post). Just make sure you don’t accidentally create pages with duplicate slugs.

Apparently there is nothing wrong with my script above. There is actually a conflict with another plugin which called the same 3rd party script twice via add_action( ‘save_post’, ‘function_name’). This double fired the 3rd party script and caused error when my script above try to do insert post. I have turned on debug at wp-config.php … Read more

There’s a bit more to the answer than just wp_insert_post(). That is the canonical way to insert a post and what the Classic Editor used to submit all of the post information at once. The REST API (and thus Gutenberg) changes it a tad but running wp_insert_post initially just to setup a post in the … Read more

$post_ID = wp_insert_post($post); … should work, as you mentioned. From the Codex: Returns the ID of the post if the post is successfully added to the database. On failure, it returns 0 if $wp_error is set to false, or a WP_Error object if $wp_error is set to true.