Question

How to multiply two integers represented as strings and return the result also as a string in PHP

Answer 1

function multiplyStrings(string $num1, string $num2): string {
    // Convert strings to integers
    $n1 = intval($num1);
    $n2 = intval($num2);

    // Perform multiplication
    $result = $n1 * $n2;

    // Convert result back to string
    return strval($result);
}

$num1 = "123";
$num2 = "456";

echo "Result: " . multiplyStrings($num1, $num2) . "\n";


/*
run:

Result: 56088

*/

 

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