Calculate Net Promoter Score (NPS) from a Collection.
composer require quarterdeck/laravel-collection-nps
Given a collection of numbers just add ->nps() and it will spit out an NPS score.
collect([1,2,3,4,5,6,7,8,9,0,10])->nps(); // -45
Any values not in the range of integers from 0-10 will be ignored.
collect([1,2,3,4,5,6,7,8,9,0,10,-1,99,null,false,'boo'])->nps(); // -45
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Be lucky.