Require_once external vars and share those with other funcions in a php class

Question

Hi all, I have an external file with some vars to require in my php class and share those with all functions of my class:

vars.inc:

<?php
 $a = 1;
?>

class.php:

<?php
 class A{
  public function __construct(){
   require_once("vars.inc");
  }
  public function aB{
   echo $a;
  }
 }
?>

but it doesn't work: the $a var is undefined

how can I do?

thanks all

Answer 1

It's a scope issue. Maybe this will be better:

<?php
 class A{
  protect $a;
  public function __construct(){
   require_once("vars.inc");
   $this->a = $a;

  }
  public function aB{
   echo $this->a;
  }
 }
?>

Answer 2

That is generally a bad practice. Either give the variables to the class through the constructor or the methods, or create a Static class that holds the variables or globally accessible variable that will hold those values. It depends on your code and exactly you are trying to do.