Hi, I am interested on this work, I'll use a database or just another text file to sum the active and inactive time of each ip server, and I'll user a jquery plugin graph to display correctly the information. On this project I'll use php side server code and client jquery, javascript and ajax code to make a live graph that update every minute.
I have experience working with php, mvc frameworks such as codeigniter, laravel, also with cms wordpress. About other tecnologies: nodejs api rest applications, with no sql and big data web databases such as mongo, couchdb, cassandra, also with simple mysql or sql server applications. In the front end I can work with xhtml, hmtl5 with standard w3c code to get web browser compatibility with firefox, opera, chrome, safari, ie, edget, webkit and also I can get responsive design with bootstrap (to get it work on all desktop, laptop and mobile devices). I can configure linux or windows servers, as well I can work with cloud services such AWS, Digital Ocean or Microsoft azure.
Please contact me, I am ready to start work on your South African websites, I'll be online, thank you.