Question

like

require "class.a.php";
require "class.b.php";
require "class.c.php";

class main{
 function main(){
   if(condition_is_met(){
      $this->something = new A();
   }else{
      $this->something = new B();
   }
 } 

}

Should the files be included in the condition check with require_once, and not all the time?

Answer 1

The only performance it should effect is the time to parse it, but I think that is preferred over complicated include logic hidden midway inside of your file. Not to mention that if you put the require inside of the if statement it is like you inserted that file’s text inside of that if statement, which isn’t right (and may not work).

Can anyone tell me if you can declare a class inside of a function/if statement?