Practical phppptx
Format transformations
Introduction
phppptx includes the conversion plugin to transform presentation formats: PPTX to PDF, PPT to PPTX, ODP to PPTX... Two conversion plugins are available: libreoffice and mspowerpoint.
PPTX to PDF
Converting PPTX to PDF is as simple as choosing the conversion plugin method to use and then invoking transform:
You can transform presentations created from scratch with phppptx, or generated with any other application, like MS PowerPoint, LibreOffice or another external library or program.
PPT and ODP can also be transformed. Thus, it is possible to convert PPT files to PPTX to work with the set of methods of the phppptx API, and then transform them again to PPT or to PDF:
The conversion plugin page has all the information regarding this functionality.