Insert into 2 tables from 1 form. Mysql Transaction?

Question

The user will create an article and submit an image with it.

+The article will go to the articles table.

+The image will go to images table (so that it can

Answer 1

$sql ='START TRANSACTION;
       INSERT INTO articles (article_id,article_title, article_text, article_date) VALUES (NULL,?, ?, NOW());
       INSERT INTO images (article_id, image_caption) VALUES(LAST_INSERT_ID(),?);
       COMMIT;';