gmp_abs
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
?>
gmp_add
(PHP 4 >= 4.0.4, PHP 5)
gmp_add — Add numbers
Description
resource gmp_add
( resource
$a
, resource $b
)Add two numbers.
Parameters
-
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.
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
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User Contributed Notes
gmp_add - [1 notes]
charlie at oblivion dot cz ¶
6 years ago