gmp_fact
PHP function
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(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
Factorial
Description
gmp_fact(GMP|int|string $num): GMP
Calculates factorial (num!) of num.
Parameters
numThe factorial number.
Parameter
Return Values
Return
Examples
gmp_fact() example
php
<?php
$fact1 = gmp_fact(5); // 5 * 4 * 3 * 2 * 1
echo gmp_strval($fact1) . "\n";
$fact2 = gmp_fact(50); // 50 * 49 * 48, ... etc
echo gmp_strval($fact2) . "\n";
?>The above example will output:
output
120
30414093201713378043612608166064768844377641568960512000000000000