oblivionv

Hi, I am an absolute beginner to php. I need urgent help. I want to create a simple webpage using php which when queried should return a definite value. we have 3 hosts host10 = 192.168.1.10 host20 = 192.168.1.20 host50 = 192.168.1.50 when i send a get request to http://localhost/ip.php?host=host10 return 192.168.1.10 and http://localhost/ip.php?host=host20 should return 192.168.1.20 respectively. I am not a developer and i need urgent help. Thank you.