PrestaShop irony:
* Theirs modules have >3500 lines per class (eg. blocklayered.php)
* Theirs controllers have > 5000 lines and contains a LOT of html code inside

AND when I tried to add own module to theirs addons store they declined it because:
* I had unused $key var in foreach and this is "bad practice" as I was told

* In one hook I was returning 1 line of html code (i had to add global Js var) and they told me that I should put it into separate template file

-.-'