PHP 8.1.0 Alpha 1 available for testing

gmp_mul

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

gmp_mulMultiply numbers

说明

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

Multiplies num1 by num2 and returns the result.

参数

num1

A number that will be multiplied by num2.

GMP 对象或 int ,或数字string

num2

A number that will be multiplied by num1.

GMP 对象或 int ,或数字string

返回值

GMP 对象。

范例

示例 #1 gmp_mul() example

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

以上例程会输出:

24691356000

add a note add a note

User Contributed Notes 1 note

up
-8
Anonymous
14 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";
?>
To Top