i usually use the php manual for the PHP katas

WoW

because it complicates the code in that way you know that it takes more time for the memory to execute

Also in a coding interview where you are applying for a specific language, knowledge of the built in functions is key to success.

I really need to start using Google lol

Brilliant

That was my thought, maybe this is just an attempt to practice looking things up? This function is so useless haha

Whats happens if height and window variables are negative?

Interesting that this is identical to the official test case code...

Well, for code readability sake its better to use one statement per line.
Thanks for that recommendation.

Mmm, put this in a line -> $n = str_split(strval($n));rsort($n);
Just for make fewer lines of code, is bad practice...