GMP Functions
PHP Manual

gmp_add

Add numbers

Description

GMP gmp_add ( GMP $a , GMP $b )

Add two numbers.

Parameters

a

The first summand (augent).

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

The second summand (addend).

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.

Return Values

A GMP number representing the sum of the arguments.

Examples

Example #1 gmp_add example

<?php
$sum = gmp_add("123456789012345", "76543210987655");
echo gmp_strval($sum) . "\n";
?>

The above example will output:

200000000000000