This client library is a PHP Library for the Postmaster API. The Postmaster API is a platform that helps developers integrate parcel shipping into applications or websites. Postmaster supports domestic and international shipping.
Google Apps Script Execution API gives access to Apps Script projects, this tutorial show followers how to build a PHP CLI that makes requests to the Execution API. PHP is the general-purpose scripting language whose uses have spread beyond building dynamic web pages to include a range of operations