Is PHP going the way of Flash? Dying or Dead? What do you think?

I don't think so. I think the death of Flash was mostly political between Apple and Adobe. Flash had amazing capabilities that, still, to this day, aren't readily available ( easy to draw vector interpolating tweens, come on! ). PHP is powerful and used on a lot of sites - I think Facebook is ( or was? ) run on PHP, could be wrong. I don't think it will die like Flash as I don't see its demise rooted in political intentions.