Access to data of a spreadsheet using php

Hello, I want to access to data of a spreadsheet in json format using javascript ¿There is any way to access to this data using the API of the Owncloud? I suppose I have to programing in php any app that publish this data ¿it is right?

My chalenge is to publisch the data of this spreadsheet in a web.


This is not related to owncloud at all -> off topic