I just figure this out, thanks for Google’s help. 
If you want to have fake sub-domain, which do nothing but to send request to your PHP script, so you don’t need to use separate script for each sub-domain, then this might be the simplest way to do. Yup, as easy as 1, 2, and 3……. lol
Okay, so this is how:
I recently tried to use Inkscape for drawing some vector based graphics, unfortunately my Wacom Bamboo didn’t work as expected. Whenever I move my pen up and back to the Inkscape window, the cursor stuck. To solve it, I need to move my pen to the area outside Inkscape window, then it works again. Really, not comfortable.
Then again, Google helps me to find the answer. This bug has been reported and some workaround has been made. Simply by modifying a DLL will make it works fine. However, I’m not gonna get into this thing, thanks to the ready DLL by Voon, it makes our life easier…