[php] include()

programming
1

I have a dilemma over the include function. My code structure is simplified to what you see below. Main.php needs $constVar, which is stored inside constants.php. Main calls page.php. Page also needs $constVar, so it must include it again. I run into errors of variable redefinition. When I attempt to use include_once(), only either main or page gets to use $constVar.


<?php
   // main.php
   include("constants.php");
   echo($constVar);

   include("page.php");
   pageCode();
?> 



<?php
   // page.php
   function pageCode()
   {
      include("constants.php");
      echo($constVar);
   }
?>



<?php
   // constants.php
   $constVar = 5;
?>