Question

I have a variable defined using define()
I want to store a part of the name of that variable in a regular php $variable,
then access that defined variable by setting the name dynamically. ie.:

define('xxx_yyy',123);
$a='xxz';
$b='_yyy';


//How to I echo out "123" now?  (without using echo xxx_yyy);
//Something like these (don't work):
echo $a$b;
echo {$a$b};

The only thing I can think of is:

$defined=get_defined_vars();
echo $defined[$a$b];

but that seems clunky

Answer 1

echo constant ( $a . $b );

is what i think you are looking for as it is a constant.