WordPress plugins are PHP scripts that alter your website. The changes could be anything from the simplest tweak in the header to a more drastic makeover (such as changing how log-ins work, triggering emails to be sent, and much more). (This article has been checked and updated on July 5th, 2017.) WordPress plugins are PHP scripts that alter your website. The changes could be anything

from the simplest tweak in the header to a more drastic makeover (such as changing how log-ins work, triggering emails to be sent, and much more). (This article has been checked and updated on July 5th, 2017.)