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I note in the PHP manual which states the following:
HTTP/1.1 requires an absolute URI as argument to ยป Location: including the scheme, hostname and absolute path, but some clients accept relative URIs.
To facilitate users with preference for a HTTPS everywhere connection, I am thinking of changing the headers in my PHP scripts from:
header("Location: http://www.example.com/"); to header("Location: //www.example.com/");
I have tested the above code to be working on my firefox browser, but I am not sure whether it is an advisable thing to do. Or whether I should extract the protocol from $_SERVER variable and put it in.