I was wondering if an https called within http would still be considered secure or not.

eg.

http://www.domainname.com/index.php/https://store.domainname.com/index.php?variables=some_values


I have a site that requires me to do this, but i only want to implement this if it is secure.

i dont think so, you will get an error or caution in the browsers

Um, that long link you posted won't work any way you intend it. Perhaps if you give us the actual task you're trying to achieve, then we can provide solutions instead of telling you what can't be done...You are, after all, interested in what can be done.

Thats the most odd URL I've ever seen. And I've been online for a very long time. LoL.

End user will send sensitive data to your server through insecure connection and then your server will send it further through secure one. What's the point?