How to check if a defined constant exists in PHP?

Question

So I\'m using a PHP framework called fuelphp, and I have this page that is an HTML file, so I can\'t use PHP in it. I have another file tha

Answer 1

here's a cooler & more concise way to do it:

defined('CONSTANT') or define('CONSTANT', 'SomeDefaultValue');

credit: daniel at neville dot tk https://www.php.net/manual/en/function.defined.php#84439