PHP header Jump: PHP header jump and return problem

Adjusted the one-hour program, only to find that there are such a large bug, later with header jump to pay attention to
Use header's jump namely "Location", cannot replace return
The header simply sends the original HTTP header to the client, even if it is redirected, and does not represent the termination of the program. After redirection, the program still executes the current PHP file until it exits and your page jumps, but the following statements still work for the browser, especially when two redirects occur.
So it's best to bring the return after the redirect.
This article links http://www.cxybl.com/html/wlbc/Php/20121019/33061.html