Working with big integer values in Laminas
<?php
use Laminas\Math\BigInteger\BigInteger;
$i = 100000000000000000000 + 1;
dump($i);
$bcmath = BigInteger::factory('Gmp');
$i = $bcmath->add('100000000000000000000', '1');
dump($i);
Result
^ 1.0E+20
^ "100000000000000000001"
Used Versions
PHP 8.0, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8