How to get Disk Space Usage and Monthly Bandwidth Transfer from cPanel to my website in PHP

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My quesiton was:

I’m wondering how can I show (get) disk space usage and monthly bandwidth transfer on my website in the same way as it’s shown when I login to my cPanel account. Is there an api from cPanel for this or is this a general method to do so? I’m using PHP.

This answer, by user richsage, was:

cPanel/WHM has an API which offers access to both the elements you’re looking for. See the API docsfor more details. The bandwidth and disk usage modules in API 1 output HTML, however API 2 has anaccount summary method which will return the diskused parameter in the appropriate format (XML/JSON as requested).