Get constant value by variable value

Question

I need to fetch a constant value. The constant name is stored in a variable.

<?php

define('SomeConstant', 12345);

$variable = 'SomeConstant';

?>

How would I echo "12345" using the variable?

Answer 1

Use the constant function

echo constant($variable);

Answer 2

<?php

define('SomeConstant', 12345);

$variable = SomeConstant;

echo $variable;

?>