[Th3PonyWizard]

I wanna learn to exploit PHP Version 5.4.9-4ubuntu2.2
I do not know what materials I need to study to be able to hack that,that's why I'm asking you

Learn Linux, Networking, Server auditing, PHP, HTML, CSS, SQL, and generic exploitation.

[Fʀᴀɴᴋɪᴇ]

Before anything, learn how to protect yourself & hide your information / data online. Your privacy is the most important thing.

[Th3PonyWizard]

It's really not.

Who said this guy is planning on doing anything privacy-threatening?

Clearly you are talking about being "undoxable" which really shouldn't be a first priority.

while it's not top priority, it also matters little as long as you learn SOMETHING