gmp_mul
(PHP 4 >= 4.0.4, PHP 5)
gmp_mul — Multiply numbers
Description
   resource gmp_mul
   ( resource $a
  , resource $b
   )
  Multiplies a by b and returns the result.
Parameters
- a
- 
      A number that will be multiplied by b. It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number. 
- b
- 
      A number that will be multiplied by a. It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number. 
Return Values
A GMP number resource.
Examples
Example #1 gmp_mul() example
<?php
$mul = gmp_mul("12345678", "2000");
echo gmp_strval($mul) . "\n";
?>
The above example will output:
24691356000