Ok, so fairly straight forward. I was very advanced with PHP. However, with the job market in the area i lived, i was absolutely unable to find a job in php. This was about 4 years ago. Since then i have not touched it in any way. I have since moved and now want to relearn it. I know it wouldn’t take long to get back to where i was, i just can’t think of the best course of action in order to relearn. So i suppose my question is, does anyone who know of a good way to go about doing this? I sped my way back into HTML/CSS but obviously that stuff is stupidly easy. Are there any project recommendations or relearning tutorials anyone is aware of? Im certain a lot has changed since, so relearning it how i learned it the first time would be obsolete (one thing i know about as far as changes is stuff like database connections using mysqli rather than mysql functions). Any pointers would be very helpful 
The simplest way, and probably the fastest, would be to start in on a project and make it as complicated as you can. For you, it would probably wouldn’t be all that difficult. Or, pick a framework and go from there.
How was your OOP-skills? PHP has developed a lot the latest years so there might be some new and fun stuff to look into.
In '09 (PHP 5.3) they finally introduced namespacing, so oop with proper namespaces and autoloading is the norm now, even in php