How can I execute remaining php code after calling "exit"?

Question

How can a client send a request to a server just to trigger an execution, where the server immediately sends a response then executes the requested code? Similar to this:

echo 'the execution is starting';
exit;
execution_function(); // <--- is it possible to this function being executed after exit 

I want the response to be immediate so the client can do other things while the server executes the request.

Answer 1

You can use register_shutdown_function() to set a callback function which will be executed when PHP exits.

Answer 2

You can use register_shutdown_function() after exit() , die() , even you can register fatal error to your error register log using this function.Quite handy