PHP Program to Multiply Two Numbers

Given two numbers, the task is to multiply both numbers using PHP. Multiplying two numbers is a fundamental arithmetic operation.

Examples:

Input: x = 10, y = 5
Output: 50

Input: x = 40, y = 4
Output: 160

Approach 1: Using the * Operator

The simplest way to multiply two numbers in PHP is by using the multiplication operator *.

PHP

<?php

function multiplyNums($num1, $num2) {
    $result = $num1 * $num2;
    return $result;
}

// Driver code
$num1 = 5;
$num2 = 8;

$product = multiplyNums($num1, $num2);

echo "Products: $product";

?>

Output

Products: 40

Approach 2: Using the bcmul() Function

The bcmul() function is used for arbitrary-precision multiplication, providing accurate results for large numbers.

PHP

<?php

function multiplyNums($num1, $num2) {
    $result = bcmul($num1, $num2);
    return $result;
}

// Driver code
$num1 = 12;
$num2 = 8;
$product = multiplyNums($num1, $num2);

echo "Products: $product";

?>

Output

Products: 96

Approach 3: Using Custom Function for Multiplication

Create a custom function that multiplies two numbers without using the * operator.

PHP

<?php

function multiplyNums($num1, $num2) {
    $result = 0;

    for ($i = 0; $i < $num2; $i++) {
        $result += $num1;
    }

    return $result;
}

// Driver code
$num1 = 12;
$num2 = 8;
$product = multiplyNums($num1, $num2);

echo "Product: $product";

?>

Output

Product: 96