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How to tell: is the request for HTTP or HTTPS?


jhsachs

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It seems to me that this should be easy, but I can't find it in the manual or the on the web, and the values in $_SERVER don't suggest anything.

 

Context: script A loads script B using HTTPS. Now script B has to load resources (images, style sheets, etc). Browsers often object to HTTP references from a script run by an HTTPS request, so script B should generate URLs that use HTTPS. Thus it has to know that it was loaded with HTTPS.

 

I can do this by brute force if I have to (defining a "protocol" constant in the script itself), but I'd rather make the test automatic.

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