I don't know if you learnt the language, but for anyone interested:
I would like to learn a coding language. I think C would be too heart, so i want to learn PHP.
Only for me and maybe later for small projects. I only know a bit of HTML.
Can i learn PHP and MYSQL if i buy a good book and work hard on it ?
Or any other suggestions what's better for a newbie ?
I highly recommend you read some books.
"Programming PHP", by O'reilly is a complete must. Is the best book I've read in my entire life.
Once you read it, I'd suggest you practice some months and then get "Php: Objects, Patterns and Practice", by Matt Zandstra. A fantastic book in object oriented php and design patterns for the language. It's the next and obligatory step for your php learning, and it will open the door for an easier understanding of other languages like Java and modern programming.
Then, if you want to go deeper, you must read: "Clean Code" by "Uncle Bob", "Design Patterns" by "The gang of Four" and "Patterns of Enterprise application architecture", by Martin Fowler.
I do not suggest you rely on video courses, they're somehow nice to give you an introduction, "the big picture"; but they don't and cannot cover all the tiny details that are needed for you to get a real understanding on how the language works. The books answer all those questions the videos leave unanswered.