CakePhp 3.x | Declaration of user defined constants

In cakephp 3 we declare constants in bootstrap.php file under /app/config folder.

A constant can be declared as:

Configure::write(‘CONSTANT_NAME’, Value, true);

Example: Configure::write(‘USERNAME’, ‘Webners’, true);

To use this constant in another file, use this:

use Cake\Core\Configure;

Now the constant can be accessed by read function.

Configure::read(‘CONSTANT_NAME’);

Example: Configure::read(‘USERNAME’);