Dynamic constant name in PHP

Question

I am trying to create a constant name dynamically and then get at the value.

define( CONSTANT_1 , \"Some value\" ) ;

// try to use it dynamically ...
$const         


        

Answer 1

And to demonstrate that this works with class constants too:

class Joshua {
    const SAY_HELLO = "Hello, World";
}

$command = "HELLO";
echo constant("Joshua::SAY_$command");