Program

all please help me, how to program to control the temperature and humidity to display on the web? this for my college assignment .. someone please help me?

What have you got so far and what problems are you having?

'"Control" and "display" are different things. There are examples, show us your code, or we can'twon't help.

control the temperature and humidity

I would suggest a heater and cooler to control the temperature and water spray and dehumidifier to control the humidity.

Now reading them is another matter, what sensors have you got? Have you got an Ethernet shield? Have you run the Ethernet web server example? How long have you got before your assignment is due in?

We will not do your assignment for you but we can point out the direction you should work towards.