How can I use the value of a variable as constant?

Question

1. I have a PHP site which uses language system based on \"define\" method. For example:

   define(\"_question_1\", \"How old are you?\");
   define(\"_quest         
   
   
           

Answer 1

Try constant() it returns the value of a constant, for example:

var_dump(constant('YourConstantNameHere'));

or with variables

var_dump(constant($a));

http://www.php.net/manual/en/function.constant.php