Server Information
The $_SERVER
array contains a lot of useful information from the web server. Much
of this information comes from the environment variables required in
the
CGI
specification (http://hoohoo.ncsa.uiuc.edu/cgi/env.html).
Here is a complete list of the entries in $_SERVER
that come from CGI:
-
SERVER_SOFTWARE
A string that identifies the server (e.g., “Apache/1.3.22 (Unix) mod_perl/1.26 PHP/4.1.0”).
-
SERVER_NAME
The hostname, DNS alias, or IP address for self-referencing URLs (e.g., “www.example.com”).
-
GATEWAY_INTERFACE
The version of the CGI standard being followed (e.g., “CGI/1.1”).
-
SERVER_PROTOCOL
The name and revision of the request protocol (e.g., “HTTP/1.1”).
-
SERVER_PORT
The server port number to which the request was sent (e.g., “80”).
-
REQUEST_METHOD
The method the client used to fetch the document (e.g., “GET”).
-
PATH_INFO
Extra path elements given by the client (e.g., “/list/users”).
-
PATH_TRANSLATED
The value of
PATH_INFO
, translated by the server into a filename (e.g., “/home/httpd/htdocs/list/users”).-
SCRIPT_NAME
The URL path to the current page, which is useful for self-referencing scripts (e.g., “/~me/menu.php”).
-
QUERY_STRING
Everything after the
?
in the URL (e.g., “name=Fred+age=35”).-
REMOTE_HOST
The hostname of the machine that requested this page (e.g., “dialup-192-168-0-1.example.com”). If there’s no DNS for the machine, this is blank and
REMOTE_ADDR
is the only information given.-
REMOTE_ADDR
A string containing the IP address of the machine ...
Get Programming PHP now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.