06-20-2014
$_SERVER['DOCUMENT_ROOT'] is a PHP global variable for the entire PHP (and web server) configuration set in the the core web server config files (for example the global Apache2 conf file). You can change it there if you have root access.
Sounds like you are on a shared server? Yes? No?
Quote:
$_SERVER is an array containing information such as headers, paths, and script locations. The entries in this array are created by the web server. There is no guarantee that every web server will provide any of these; servers may omit some, or provide others not listed here. That said, a large number of these variables are accounted for in the » CGI/1.1 specification, so you should be able to expect those.
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LEARN ABOUT DEBIAN
fcgiwrap
FCGIWRAP(8) System Manager's Manual FCGIWRAP(8)
NAME
fcgiwrap - serve CGI applications over FastCGI
SYNOPSIS
fcgiwrap [OPTIONS]
DESCRIPTION
fcgiwrap is a simple server for running CGI applications over FastCGI. It hopes to provide clean CGI support to Nginx (and other web
servers that may need it).
OPTIONS
-c number
Number of fcgiwrap processes to prefork.
-s socket_url
A URL for the listen socket to bind to. By default fcgiwrap expects a listen socket to be passed on file descriptor 0, matching the
FastCGI convention. The recommended way to deploy fcgiwrap is to run it under a process manager that takes care of opening the
socket. However, for simple configurations and one-off tests this option may be used. Valid socket_urls include
unix:/path/to/unix/socket, tcp:dot.ted.qu.ad:port and tcp6:[ipv6_addr]:port.
-h Show a help message and exit.
ENVIRONMENT
When running, fcgiwrap evaluates these environment variables set by the web server calling an fcgi-script. The variables DOCUMENT_ROOT and
SCRIPT_NAME will be concatenated and the resulting executable run as CGI script wrapped as FastCGI, with the remainder after the script
name available as PATH_INFO. To disable PATH_INFO mangling, set up your web server to pass SCRIPT_FILENAME, which should contain the com-
plete path to the script. Then PATH_INFO will not be modified.
DOCUMENT_ROOT
directory which the script resides in
SCRIPT_NAME
actual executable
SCRIPT_FILENAME
complete path to CGI script. When set, overrides DOCUMENT_ROOT and SCRIPT_NAME
EXAMPLE
The fastest way to see fcgiwrap do something is to launch it at the command line like this:
fcgiwrap -s unix:/var/run/fcgiwrap.sock
Apart from potential permission problems etc., it should be ready to accept FastCGI requests and run CGI scripts.
Most probably you will want to launch fcgiwrap by spawn-fcgi using a configuration like this:
FCGI_SOCKET=/var/run/fcgiwrap.sock
FCGI_PROGRAM=/usr/sbin/fcgiwrap
FCGI_USER=nginx
FCGI_GROUP=www
FCGI_EXTRA_OPTIONS="-M 0700"
ALLOWED_ENV="PATH"
Nginx can be configured to have the arbitrary CGI cgit run as FastCGI as follows:
location / {
fastcgi_param DOCUMENT_ROOT /var/www/localhost/htdocs/cgit/;
fastcgi_param SCRIPT_NAME cgit;
fastcgi_pass unix:/var/run/fastcgi.sock;
}
AUTHOR
fcgiwrap was written by Grzegorz Nosek <root@localdomain.pl> with contributions by W-Mark Kubacki <wmark@hurrikane.de>.
This manual page was written by Jordi Mallach <jordi@debian.org> (with contributions by Grzegorz Nosek) for the Debian project (and may be
used by others).
Jun 3, 2010 FCGIWRAP(8)