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gmp_and> <gmp_abs
[edit] Last updated: Fri, 17 May 2013

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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.

可以是一个 GMP 数据 resouce,或一个可以转换为数值的字符串。

b

A number that will be added.

可以是一个 GMP 数据 resouce,或一个可以转换为数值的字符串。

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";
?>

以上例程会输出:

200000000000000



add a note add a note User Contributed Notes gmp_add - [1 notes]
up
0
charlie at oblivion dot cz
6 years ago
gmp_* functions don't accept strings with a leading '+':
<?php
echo gmp_strval(gmp_init('+42'));      #0
echo gmp_strval(gmp_add('42', '+42')); #42
echo bcadd('+42', '+42');              #84
?>

 
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