Zend Framework 1应用程序在另一个应用程序内

I have a Zend Framework app configured on a subdomain, with a SSL cert. I would like to reuse the SSL cert, instead of buying another one for the admin app.

My main Zend app URL is something like this:

https://system.mysite.com

I would like to access the another app like this:

https://system.mysite.com/control

I could have done this, but my SSL cert only allows one subdomain:

https://control.mysite.com

How can I achieve this?

My server is Apache.