In part one of a new series on the SitePoint PHP blog Bruno Skvorc looks at the right way to start a PHP package using a set of guidelines that have evolved recently in well-structured, well-tested PHP packages.
In recent years, good standards for PHP package design have popped up, in no small part due to Composer, Packagist, The League and, most recently, The Checklist. Putting all these in a practical list we can follow here, but avoiding any tight coupling with The League (since our package won't be submitted there - it's specifically made for a third party API provider and as such very limited in context).
The list of rules includes topics like having a license selected, using PSR-4 autoloading and having in-depth code comments. Bruno uses these as a foundation and starts in on the creation of a package. He uses the PHP League skeleton structure to create the files and folders for a basic package. From there he updates the contents with details for his Diffbot example and installing other needed software libraries. The rest of the post is broken up into the two remaining steps and examples under each: sticking with the PSR-2 guidelines and planning for the structure of the package.