Include Variables

These variables are available to the echo command, if, elif, and any program on the server invoked with the exec command:

• DATE_GMT
• The current date (at the server) in Greenwich Mean Time

• DATE_LOCAL
• The current date (at the server) in the local time zone

• DOCUMENT_NAME
• The name of the current file (excluding directories)

• DOCUMENT_URI
• The (%-decoded) URL path of the current file

• LAST_MODIFIED
• The last modification date and time for the current file

• QUERY_STRING_UNESCAPED
• Contains the "unescaped" version of any search query (GET) sent by the browser. Any special characters are escaped using the backslash (\) character.

Other Available Variables

The following are just a few of the many standard environment variables available to both CGI programs and Server Side Includes:

• HTTP_ACCEPT
• A list of the media types the client can accept

• HTTP_REFERER
• The URL of the document the client was viewing before selecting the link (or form) that accessed the SSI page or CGI script

• HTTP_USER_AGENT
• The browser the client is using to issue the request

• REMOTE_ADDR
• The remote IP address from which the user is making the request

• REMOTE_HOST
• The remote hostname from which the user is making the request (can be useful for detecting top level domain suffixes such as com, edu, etc.)