Should I buy books of new editions on programming?

Question

Books

Good day, members of the Toaster.
Please help me resolve this dilemma:
Once upon a time I bought books (PHP5 in the Koterov original and New big book CSS McFarland 2016 edition). But it so happened that I only now came to read these books.
Question: does it make sense to buy new books PHP7 and CSS 2019 edition? Or is it better to study according to the books that are now available?

Answer 1

For an initial review, the 2016 edition and PHP5 will be enough, at this stage there is no point in buying new editions.

Answer 2

Somehow I started learning PHP from a 2015 book, and so the code for creating a database table stupidly did not work there, a table was not created, simply because some standards changed, I had to make the table "by hand". I agree that the newer the book, the better.