I'd like to integrate WooCommerce with a separate service such that WooCommerce registration posts to WordPress, and then immediately posts user registration information to a separate service on another URL using a hidden iFrame.
What I'd like to know is, first of all, which PHP file handles the post from the WooCommerce registration page?
Additionally, in general, are there any suggestions or recommendations anyone could offer for accomplishing this?
Here's the algorithm I was thinking of.
1.) User registers and information is saved to WordPress database
2.) on the "success" page, an iFrame is created and the information is supplied to that iFrame to post the data to another URL. The iFrame is needed because the post much be done from the browser in order to have the resulting success page from the post to set a cookie in the browser.