PHP Cloud SDK to communicate with GroupDocs REST APIs for editing business documents formats. Edit Microsoft Word, Excel, PPTX, HTML & XML files....WordML), Excel (XLS, XLSX, SpreadsheetML), Presentations (PPT, PPTX)...XLTX, XLTM, XLAM, SXC, SpreadsheetML, ODS, FODS, DIF, DSV, CSV...