This PHP library aims to be the most functional geo-aware tool because it includes the providers of ArcGISOnline, GeoIP2, Google Maps, GoogleMapsBusiness, MaxMindBinary, Nominatim, TomTom, and Yandex. What this library provides is powerful abstraction layer for geocoding manipulations, according to the author. A complete guide to use the PHP library is available on William Durand's GitHub site.
The Open API Initiative has announced that the final release of the OpenAPI 3.0 Specification is tentatively scheduled for release the week of July 17. A two-week last chance period will begin on June 19 giving developers a final chance to try out OpenAPI 3.0 and propose changes to the spec.