egyptian nationality

Hi, I am planning to visit Hongkong before I'm going to Philippines, so here is the sample of my flight details

Doha-Hongkong ( will stay in Hongkong for 3days)
Hongkong-Manila (will stay for 10days) I have tourist visa in Phil.
Manila-Doha

My question is, do I have to apply for hongkong visa though I have plane ticket and tourist visa in philippines? to prove that I will leave HK after 3days tour.

Your help will very much appreciated.

Thanks