Nearly every code has variables.*
There are two languages to which it requires a variable to be defined and recalled with a $ before its name are PHP and torque.
You did not read my post right. :p
C++:
type name[ = value];
PHP:
$name=value;
torque:
$name=value;
%name=value; //Does not work in console. :p
Lua:
[local] name[=value];
Do you understand yet?