gmp_pow fails in PHP 8.2.26 and 8.3.14

[kelvinmo]

Description

In the certain php minor releases there is an issue with gmp_pow that only accepts very small values: php/php-src#16870 Concretely, for reasonably big numbers, the execution fails with Uncaught ValueError: base and exponent overflow According to the changelog, this change is in 8.3.14 and 8.2.26.

This issue affects ECKey::isValid().

Steps to reproduce

See https://github.com/kelvinmo/simplejwt/actions/runs/12244128129/job/34155190113?pr=213

Expected behaviour

A clear and concise description of what you expected to happen.

Environment

• PHP: 8.3.14 and 8.2.26

Backtrace

See https://github.com/kelvinmo/simplejwt/actions/runs/12244128129/job/34155190113?pr=213