What changes in the code can be made so that instead of randomly choosing between true and false, the generator outputs random numbers 1, 2, or 3?

Instead of generating a random boolean value (true or false) to get a random number from the set {1, 2, 3}, you can use the rand() or mt_rand() functions in PHP with a range from 1 to 3.

Example of code modification:

// Before:
$randomBool = (bool)rand(0, 1); // true or false

// After:
$randomNumber = rand(1, 3); // random number 1, 2, or 3

// Or using mt_rand:
$randomNumber = mt_rand(1, 3);

Thus, instead of a random boolean, you will get a random integer from the desired range.