php-horde-xml-element binary package in Ubuntu Bionic amd64

 An element object that can be used to provide SimpleXML-like functionality
 over a DOM object. The main advantage over using SimpleXML is the ability to
 add multiple levels of new elements in a single call, without introducing
 "ghost" objects.
 .
 This package is part of Horde, a web application Framework written in PHP with
 modules like IMP (webmail), Turba (contacts), Kronolith (calendar), Nag (task
 list), Gollem (file manager), etc.

Source package