You learned how to declare an array earlier.
Arrays can also be declared as constants.
Assigning a different value does not change the value.
define( 'constant name' , ['array value1' , 'array value2' , 'array value3']);
The way you print an array is not too different.
echo constant name[index];
So let's look at an example.
<?php
define('DISNEY',['MICKEY', 'MINNIE', 'DUFFY']);
echo DISNEY[0];
echo '<br>';
echo DISNEY[1];
echo '<br>';
echo DISNEY[2];
?>
Here is the resulting image
