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# gmp_sub

(PHP 4 >= 4.0.4, PHP 5)

gmp_sub -- Subtract numbers

## Description

resource gmp_sub ( resource a, resource b )

Subtracts b from a and returns the result.

Example 1. gmp_sub() example

`<?php $sub = gmp_sub("281474976710656", "4294967296"); // 2^48 - 2^32 echo gmp_strval($sub) . "\n"; ?>`

The printout of the above program will be:

    281470681743360

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