Liquid Magik makes excellent points here.
PH is extinct, if indeed it ever existed as a viable and true-breeding strain (doubtful).
There is a so called 'Purple HAze' on the market but it's a recent introduction SPECIFICALLY created to take advantage of nOObs who think that the name means it's ooooh so special... but as we know, fools and their money are easily parted.
Yet another example of putting too much emphasis on a name... would Purple Haze by any other name smell as sweet?
NOPE!