PHP calling Flash

Most of the time, what I am doing is Flash calls PHP to get data from either the database or XML stuff.

I am wondering if it is possible to do the opposite way, where PHP could alert the client, which is the flash player, to do an update? In other words, server calling the client?

I am in a situation where my Flash has to constantly calling PHP to check if there is a change in the database then grab the data from there then pass it back to Flash.

But I am thinking if PHP could alert Flash that there is a change in the database value, then Flash doesn’t have to keep calling PHP every now and then to check for updates, which sometimes isn’t too practical.

thanks and merry christmas everyone! :party: