PHP 5.6.0 released

gmp_mul

(PHP 4 >= 4.0.4, PHP 5)

gmp_mulMultiply 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

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User Contributed Notes 1 note

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Anonymous
7 years ago
<?php
function fact($x)
{
  
$factorial = 1;
   for (
$i=2; $i < $x; $i++) {
      
$factorial = gmp_mul($factorial, $i);
   }
   return
$factorial;
}

echo
gmp_strval(fact(1000)) . "\n";
?>
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