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 string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).
num2: A number that will be multiplied by num1.
A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).

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