Why doesn't the teacher need to add a port number?

Question

I need to add the port number, http://localhost:63342/PhpstormProjects/blog/index.php/

If you add /Admin at the end, it will not jump! ! !

Answer 1

The default port number of the server is port 80. Only if it is the default port number, you do not need to add the port number, otherwise you need to specify the port