(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_add — Add numbers
aThe 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.
bThe 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.
A GMP number representing the sum of the arguments.
Example #1 gmp_add() example
<?php
$sum = gmp_add("123456789012345", "76543210987655");
echo gmp_strval($sum) . "\n";
?>
The above example will output:
200000000000000