<?php use Shift196\AKashLib\Util\UInt64String as i; require_once 'vendor/autoload.php'; $str0 = hex2bin('1BD11BDA' . 'A9FC1A22'); $str1 = hex2bin('10203040' . '50607080'); var_dump(bin2hex(i::___shiftRight($str0, 32)));