Global vs static variables in PHP

Question

I\'m creating a basic framework in PHP. I need to pass data for the current page into different functions, allow them to modify and save it, and then pass it back to the pag

Answer 1

For the record.

Pro of static:

Clarity of the code. For example:

function fn() { 
   System::data()
 }

versus

function fn() { 
   global $system;
   $system->data()
 }

Cons of static:

• If you are using psr-4 then you must add (and include) a new class (and a new file). It impacts the performance even if you use opcache (opcache aleviates it but it's not magic).
• You must define a block of code.