Open source contributions

I contribute to open-source libraries on GitHub as @DanielEScherzer.

PHP

I started contributing to the PHP source in August 2024, working primarily on bug fixes, improvements to the Reflection extension and various cleanup. In March 2025, I requested and was granted access to make direct changes (and approve others' changes) to PHP. I also became the official maintainer of the reflection extension.

Also in March 2025, I volunteered to serve as one of the release managers for the then-subsequent version of PHP, PHP 8.5. In April, the community voted to decide between the volunteers (luckily there were plenty of candidates) and I was one of the two "rookie" candidates chosen to help with the release. You can read more in my blog post.

PHP uses a process of requests for comment when proposing and implementing major changes; I have proposed the following RFCs:

• November 2024: Attributes on Constants - Adding support for attributes on compile-time constants
• March 2025: Never Parameters (v2) - Adding support for never-typed parameters
• March 2025: Final Property Promotion - Adding support for final modifiers in constructor property promotion

Packages

I also wrote multiple open-source PHP packages - though they are currently primarily used by me, I am a firm supporter of open-source code and figured that they might be useful to others. The packages that I have created so far are:

• danielescherzer/common-phpcs - Collection of common codesniffer standards for my projects
• danielescherzer/html-builder - Tools for building HTML

Website

The source code for my website is also public, in case the code is useful to others. The actual text about me is probably not going to be relevant, but my setup, configuration, and style pages may be useful. See the code here.