Learn the language first, then if you want use the framework. IMHO php don't need a framework. Maybe someone will add to this and tell us what is the advantage of one for php.
Now jquery being a framework for javascript is great and you should look into it. In the not so distant past, I did say a framework for javascript was not necessary. Lol. But someone showed me it's advantage outside of ajax and I was a believer.
Google PHP learning sites or just use:
http://www.w3schools.com/php/default.asp