PHP lessons

Programs to accomplish this week are below.
Advanced guys make work independently.

1) A PHP script to print your full name to the screen.
2) Print an approximiation of pi to the screen.
3) Print the approximate circumference of the earth to the screen.
4) On what date is Easter in 2037? Print it to the screen.
5) Compose an email address validator such that the user enters an address and the computer validates it as a valid address. The computer will not check if the address actually EXISTS, just if it is in the proper format with no illegal characters.

Due: Wed.