My open source projects

MediaWiki

Most of my open source work is related to MediaWiki, Semantic MediaWiki or Wikidata.

Wikimedia Deutschland fundraising

After leading the creation of this application, I have written and spoken multiple times about its architecture.

Small library for representing, computing and applying diffs between structured data. Used by Wikipedia.

Small library for parsing, formatting and representing coordinates. Used by Wikipedia.

Tiny library providing an OO file_get_contents alternative, including adapters and decorators.

Test Doubles for the PSR-3 Logger Interface.

Processes parameters in declarative fashion. Written in 2010 so contains a lot of legacy code.

Tiny library defining a minimalistic caching interface and provides some basic implementations.

PHP value object for representing a positive amount of Euro.

Tiny library defining interfaces for services that assist with serilization and deserialization.

Tiny library providing an Iterator that batches requests for additional values.

Tiny library defining an interface to report arbitrary text messages.

Extended Date/Time Format implementation created in 2021 for the Luxembourg Ministry of Culture.

Micro library with PostRequestSender interface and some test doubles.

The canonical PHP implementation of the Data Model at the heart of the Wikibase software.

Small library containing services to assist with serialization and deserialization of Wikibase DataModel objects.

Services to assist with serialization and deserialization of Wikibase DataModel objects on the Wikimedia cluster.

A collection of services around Wikibase DataModel.

Reading of, and iteration through, the Wikibase entities in a Wikibase Repository JSON dump.

Small library for looking up terms by item or property id or finding ids by term

Provides persistence and basic lookup capabilities for collections of Wikibase entities.

Provides persistence of Wikibase terms with lookups of those terms and by those terms.