I'd assume that HTTP header variables means it's sent in the HTTP header or possibly as a cookie. Don't know if the CGI http() method will get you access to arbitrary header settings; perhaps it depends on what web server you are using. For cookies, see CGI.

A quick look at the source reveals CGI's http() method just looks for environment variables starting with HTTP.

Update: as 3dan and etcshadow say, the server uppercases the header labels and prepends HTTP_ to make them available in the environment. (I wonder if this is actually reliable for arbitrary headers on all servers.)

In reply to Re: Re: CGI Parameters by ysth
in thread CGI Parameters by Gerard

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