[theworker02]

Summary

Fixes #24497.

This pull request corrects the default configuration value reported by memory_hard_limit_percent, which was introduced as part of PHP's memory-limit security hardening.

Previously, the directive was registered with a NULL default, causing ini_get('memory_hard_limit_percent') to return an empty string instead of the expected -1.

Changes

• Updated the directive registration in main/main.c to use "-1" instead of NULL.
• Added PHPT tests covering configuration reporting and runtime overrides.
• Added a GitHub Actions workflow to build PHP and execute the regression tests.

Expected Behavior

var_dump(ini_get('memory_hard_limit_percent'));

Expected output:

string(2) "-1"

The change is intended to make the reported default consistent with the existing automatic hard-limit behavior, without modifying the underlying memory allocation algorithm.

Testing

• PHP CLI build and focused regression-test workflow completed successfully on the contributor's fork.
• GitHub Actions: https://github.com/theworker02/php-src-patch/actions/runs/39684425665

Related Issue

Fixes #24497