Learning PHP: any suggestion?

[Rifat]

Hello Everyone,

out of many programming languages, i know a little bit of C++,Java and MATLAB(i only am familiar with them and know little about them) now my professor told me that in order for him to give me research opportunities i must learn PHP over the summer. so, here i am, willing to learn PHP, can anyone suggest me what is the easiest and fastest way to learn PHP? give me website links which teach me PHP for free preferred. thanks.
all suggestions welcome


Regards, Rifat