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<Sodium Functionssodium_base642bin>
^Sodium FunctionsLast updated: Mon, 26 Oct 2026

sodium_add

(PHP 7 >= 7.2.0, PHP 8)

sodium_add — Add large numbers

Description

function sodium_add(string &$string1, string $string2): void

This adds the parameter string2 to string1, overwriting the value stored in string1. This function assumes both parameters are binary strings that represent unsigned integers in little-endian byte order.

Parameters

string1

String representing an arbitrary-length unsigned integer in little-endian byte order. This parameter is passed by reference and will hold the sum of the two parameters.

string2

String representing an arbitrary-length unsigned integer in little-endian byte order.

Return Values

No value is returned.


<Sodium Functionssodium_base642bin>
^Sodium FunctionsLast updated: Mon, 26 Oct 2026