gmp_mod
<?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";
?>
gmp_mul
(PHP 4 >= 4.0.4, PHP 5)
gmp_mul — Multiply numbers
说明
resource gmp_mul
( resource
$a
, resource $b
)
Multiplies a by b
and returns the result.
参数
-
a -
A number that will be multiplied by
b.可以是一个 GMP 数据 resouce，或一个可以转换为数值的字符串。
-
b -
A number that will be multiplied by
a.可以是一个 GMP 数据 resouce，或一个可以转换为数值的字符串。
返回值
GMP 数值资源.
范例
Example #1 gmp_mul() example
<?php
$mul = gmp_mul("12345678", "2000");
echo gmp_strval($mul) . "\n";
?>
以上例程会输出：
24691356000
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User Contributed Notes
gmp_mul - [1 notes]