Print All Numbers Divisible by 3 and 5 for a Given Number in PHP

This article will show you how to print all the numbers less than N, that are divisible by 3 and 5 in PHP. When working with numbers, it’s common to need a program that can identify and print all numbers divisible by specific values. In this article, we will explore different approaches in PHP to print all numbers divisible by 3 and 5 up to a given number.

Using for Loop

The basic method to achieve this is by using a loop to iterate through numbers up to the given limit and checking divisibility.

PHP

<?php

function printDivisibleNumbers($num) {
    for ($i = 1; $i <= $num; $i++) {
        if ($i % 3 == 0 && $i % 5 == 0) {
            echo "$i ";
        }
    }
}

// Driver code
$num = 50;

printDivisibleNumbers($num);

?>

Output

15 30 45 

Using array_filter() and range() Functions

Another approach involves using array_filter() along with range() to create an array of numbers and filter out those divisible by both 3 and 5.

PHP

<?php

function check3And5Divisible($number) {
    return ($number % 3 == 0 && $number % 5 == 0);
}

function printDivisibleNumbers($num) {
    $numbers = range(1, $num);
    $divisibleNumbers =
        array_filter($numbers, 'check3And5Divisible');

    echo implode(' ', $divisibleNumbers);
}

// Driver code
$num = 50;

printDivisibleNumbers($num);

?>

Output

15 30 45