# gmp_binomial

(PHP 7 >= 7.3.0)

gmp_binomial — Calculates binomial coefficient

### Description

gmp_binomial ( mixed `$n` , int `$k` ) : GMP|false

Calculates the binomial coefficient C(n, k).

### Parameters

`n`

  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.

`k`

### Return Values

Returns the binomial coefficient C(n, k), or `FALSE` on failure.

### Errors/Exceptions

Issues E_WARNING if `k` is negative.