I am new to PHP development and i want to buy a book. I have settled on
Learn PHP, MySQL and JavaScript by Robin Nixon but i'm feeling a bit apprehended because the book is (roughly) 3 years old.
Does PHP books get outdated?
Can i still use it now ?
I know nothing about mySQL and JavaScript though i can understand PHP a bit.

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update: though i thought about buying this book, but after looking at the 2 star and 3 star reviews i'm doubtful. The worst thing is everybook is having something negative, saying it teaches bad practices and the advanced stuff is too little etc etc. What to do? which book to follow?

Thank you