exit(); die(); return false; [duplicate]

Answer 1

According to docs PHP: exit Manual die() is an alias to exit() so they do the same function and that is to END the script.

The return statement ends a function and not the entire script, and returns the value that you choose.

Answer 2

die() and exit() are precisely identical; they halt the entire PHP program and return to the OS. They're two different names for the same function.

return, on the other hand, ends a function call and returns to the caller. At the end of a program, return sets the status value that is returned to the OS; the program is going to exit no matter what.