GMP 函数
PHP 手册

gmp_add

(PHP 4 >= 4.0.4, PHP 5)

gmp_addAdd numbers

说明

resource gmp_add ( resource $a , resource $b )

Add two numbers.

参数

a

A number that will be added.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

b

A number that will be added.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

返回值

A GMP number representing the sum of the arguments.

范例

Example #1 gmp_add() example

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

上例将输出:

200000000000000


GMP 函数
PHP 手册