What is the difference between require() and include()?

Question :

What is the difference between require() and include()?

Both of these constructs includes and evaluates the specific file. The two functions are identical in every way except how they handle failure. If filepath not found,require() terminates the program and gives fatal error, but include() does not terminate the program; It gives warning message and continues to program. include() produces a Warning while require() results in a Fatal Error if the filepath is not correct.