gmp_mul

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_mul — Multiply numbers

gmp_mul(GMP|int|string $num1, GMP|int|string $num2): GMP

Multiplies num1 by num2 and returns the result.

num1

A number that will be multiplied by num2.

A GMP object, an int or a numeric string.

num2

A number that will be multiplied by num1.

A GMP object, an int or a numeric string.

A GMP object.

Example #1 gmp_mul() example

<?php
$mul = gmp_mul("12345678", "2000");
echo gmp_strval($mul) . "\n";
?>

The above example will output:

24691356000

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https://www.php.net/manual/en/function.gmp-mul.php