Figure out an if else

UKHeliBob:
What do you want the program to do ?

if something is true

carry out action 1
end of if
else
  carry out action 2
end of else



What is the something that can be true or false ?
What are actions 1 and 2 ?

I am trying to turn on solenoid valves with the program, basically whenever the IR sensor has some type of obstruction, it will turn the valve on.