Crackle Pop - Factorization

cracklePop.php

<?php

// In PHP, variables are function-scoped. Use call_user_func to prevent global pollution.

call_user_func(
    function() {
        for ($i=1; $i<101; $i++) {

            // Reset variables every loop as PHP variables are function scoped, not block scoped.
            $divisibleBy3 = false; 
            $divisibleBy5 = false;
            // By default, print number
            $toPrint = $i;

            // If divisible by 3, print "Crackle" instead
            if ($i % 3 == 0) {
                $toPrint = "Crackle";
                $divisibleBy3 = true;
            }
            // If divisible by 5, print "Pop" instead
            if ($i % 5 == 0) {
                $toPrint = "Pop";
                $divisibleBy5 = true;
            }
            // If divisible by 3 and 5, print "CracklePop" instead
            if ($divisibleBy3 && $divisibleBy5) {
                $toPrint = "CracklePop";
            }
            
            // Print out variable
            echo $toPrint . "<br>";
        }
        
    }
);

?>