“A PhD degree is
normally obtained after six to eight years of hard work past
the bachelor’s degree.”
3 to 5 years.
Do you really think you could get a Ph.D. in three years post baccalaureate? I doubt you could at a reputable school.
For a Ph.D. you need to have two foreign languages, take and pass comp exams, pass your dissertation proposal and write and defend your dissertation. Oh and you’ll probably need computer/analytical skills. Some people need two years just to get a masters degree.