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For an unencrypted request, the variable does not exist.
+ **REMOTE\_ADDR**
The IP address and port from which the HTTP request originated.
+ **SCRIPT_NAME**
In CGI mode, this is the name of the CGI script in the URL. In other
words, it is the initial part of the URL path that identifies the
CGI script. For other modes, this variable is an empty string.
+ **PATH\_INFO**
The part of the URL path that follows the SCRIPT\_NAME. For all modes
other than CGI, this is exactly the URL pathname.
+ **REQUEST\_URI**
The URL for the inbound request, without the initial "http://" or
"https://" and without the HTTP\_HOST.
+ **REQUEST\_METHOD**
"GET" or "HEAD" or "POST"
+ **BASE\_URL**
The text of the request URL through the SCRIPT\_NAME. This value can
be prepended to hyperlinks to ensure that the correct page is reached by
those hyperlinks.
+ **PATH\_HEAD**
The first element in the PATH\_INFO. The value of PATH\_HEAD is used to
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For an unencrypted request, the variable does not exist.
+ **REMOTE\_ADDR**
The IP address and port from which the HTTP request originated.
+ **SCRIPT_NAME**
In CGI mode, this is the name of the CGI script in the URL. In other
words, this is the initial part of the URL path that identifies the
CGI script. For other modes, this variable is an empty string.
+ **PATH\_INFO**
The part of the URL path that follows the SCRIPT\_NAME. For all modes
other than CGI, this is exactly the URL pathname, though with the
query parameters removed. PATH_INFO begins with a "/"
+ **REQUEST\_URI**
The URL for the inbound request, without the initial "http://" or
"https://" and without the HTTP\_HOST. This variable is the same as
the concatenation of $SCRIPT\_NAME and $PATH\_INFO.
+ **REQUEST\_METHOD**
"GET" or "HEAD" or "POST"
* **CONTENT\_LENGTH**
The number of bytes of POST data.
* **CONTENT\_TYPE**
The mimetype of the POST data. Usually this is
application/x-www-form-urlencoded.
* **CONTENT**
The raw POST data text.
+ **BASE\_URL**
The text of the request URL through the SCRIPT\_NAME. This value can
be prepended to hyperlinks to ensure that the correct page is reached by
those hyperlinks.
+ **PATH\_HEAD**
The first element in the PATH\_INFO. The value of PATH\_HEAD is used to
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