<?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, PHP 7)
gmp_mul — Multiply numbers
Параметри
-
a -
A number that will be multiplied by
b.Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.
-
b -
A number that will be multiplied by
a.Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.
Значення, що повертаються
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
Приклади
Приклад #1 gmp_mul() example
<?php
$mul = gmp_mul("12345678", "2000");
echo gmp_strval($mul) . "\n";
?>
Наведений вище приклад виведе:
24691356000
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