how can post image i upload it in LinkedIn and Instgram in Laravel

how can post image i upload it in LinkedIn and Instgram in Laravel

2018 Developer Skills Report

https://research.hackerrank.com/developer-skills/2018/?utm_medium=email&utm_source=drip&mkt_tok=eyJpIjoiTTJGa1ltVXpOR0l4T1RnNCIsInQiOiJZVmNPTlZBSEd2WFwvYWFMVmFpZlI2bDNQNktqV1RhSnkxb1VQNUlrTjYrZEhiSldueGNhSVRBXC8xaWFpcENyT2RveFRFaEpUU3E1aDBacVJIS0MwTX...

Difference between DB::table('table') and model::('table')

Difference between DB::table('table') and model::('table')

In which cases should the constructor be private?