Can someone tell me how to enable https for a particular php script?  I
was just looking at the newly created Library Success Wiki
http://www.libsuccess.org/ and noticed that its login page is
unencrypted.  I mentioned this to the Wiki admin who then asked me how
to fix it.  Unfortunately I know zilch about php.  Is there a simple answer?

PS: The site is "powered by MediaWiki" http://www.mediawiki.org/ but a
search of their documentation for https returns no result.