Strong typing?

PHP is a great language. It makes it fast and easy to create web pages. However, one feature which is critical for doing rock-solid stable websites is strong typing. The reason for this is that you're dealing with untrusted user input. Strong typing helps because if you are expecting an INT, and the user gave you something else, and you made a mistake in your input checking, the program will fail when you attempt to assign the value to the strongly-type INT variable. This is a good thing when you are dealing with money, or other contexts where you need very solid code. First, is there a plan to introduce a strong typing option, like perl's strict mode? Second, is there a way to get something equivalent to strong typing using the class system? Thanks