gistfile1.txt

I will explain very clearly what  I can't get .

Let's say I have a laravel application.

Let's say folders have permissions like this:  drwxr-xr-x www-data www-data  which means 755;


Then,I go to website and type url and click enter. As you say, I become user named www-data. code gets executed,for example:
$allCities = City::orderBy('id','desc')->paginate(10);
return view('admin_side.cities.allCities',compact('allCities'));
as we know, www-data makes it which is me also who went to that website.
I had the permission like drwxr-xr-x.  so what happened in this scenario is everything worked. 
what if i delete last (r and x) it becomes drwxr-x---. then if i go to that web url again, it doesn't work. 
why? we saw that www-data still has (rwx) permissions. In my opinion www-data executes codes, but to show users final page,
what happens is WORLD PERMISSIONS FOR FILES get used.