Question

A PHP constant is defined like this:

define('const_name','const_value');

Tried like this:

define('const_name', $variable_name);  

Why? because I’m a beginner and I figured if this works:

define('const_name', 50);  

my version will work also. It doesn’t. Should it work and it doesn’t because I mistyped something, or my attempt is just plain stupid?

Note: Inside my variable is a Google Analytics ID extracted from a mysql DB. Just a string like this UA-XXXXX-Y, nothing more.

Answer 1

$myVariable="what up";
define('myConstant',"$myVariable");
echo myConstant;

Really though, why define a variable as a constant? This is not a good habit to get into.