PHP Exercises: Check if a given non-negative given number is a multiple of 3 or 7, but not both

PHP Basic Algorithm: Exercise-42 with Solution

Write a PHP program to check if a given non-negative given number is a multiple of 3 or 7, but not both.

Sample Solution:

PHP Code :

<?php
// Define a function that checks if a number satisfies an exclusive OR (^) condition involving modulo operations
function test($n)
{
    // Check if the remainder of $n divided by 3 is 0 XOR the remainder of $n divided by 7 is 0
    return ($n % 3 == 0) ^ ($n % 7 == 0);
}

// Test the function with different values
var_dump(test(3));
var_dump(test(7));
var_dump(test(21));
?>

Sample Output:

int(1)
int(1)
int(0)

Visual Presentation:

Flowchart:

PHP Code Editor:

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