
As a current example I've loosely followed this tutorial and made a working registration modal that shows on all pages. Now the problem I'm facing is the problem the tutorial ignored, not having a working captcha. If you use captcha you can't register without completing it and since its variable {$regimage} doesn't work outside of member.php, the tutorial chose to disable captcha all together. I would feel safer having it though. It appears that my answer may be here, but it's a specific question and again I have no idea of how to implement that into my php files.
I haven't found a lot of information on this for beginners, so would someone mind possibly using my example and explaining how hooks are used to make a variable from one page work in another page?