The #echo Command

The echo command makes available the set of environment variables sent to CGI programs. Using this command you can send these variables back to the user without having to resort to CGI programs. The echo command is followed by the parameter and argument values "var=environment variable"

Simple Example: Output Environmental Variables

The following SHTML file displays a selection of SSI variables.

<html>
<head>
<title>SSI Variables</title>
</head>
 
<h1>SSI Environment Variables</h1>
 
<pre>
SERVER SOFTWARE   : <!--#echo var="SERVER_SOFTWARE"-->
GATEWAY_INTERFACE : <!--#echo var="GATEWAY_INTERFACE"-->
SERVER_PROTOCOL   : <!--#echo var="SERVER_PROTOCOL"-->
SERVER_NAME       : <!--#echo var="SERVER_NAME"-->
SERVER_PORT       : <!--#echo var="SERVER_PORT"-->
REQUEST_METHOD    : <!--#echo var="REQUEST_METHOD"-->
REMOTE_HOST       : <!--#echo var="REMOTE_HOST"-->
HTTP_USER_AGENT   : <!--#echo var="HTTP_USER_AGENT"-->
DATE_LOCAL        : <!--#echo var="DATE_LOCAL"-->
DATE_GMT          : <!--#echo var="DATE_GMT"-->
</pre>
 
</body>
</html>

Will result in something similar to the following being sent to the client:

<html>
<head>
<title>SSI Variables</title>
</head>
 
<h1> SSI Environment Variables </h1>
 
<pre>
SERVER SOFTWARE   : Zeus/3.0
GATEWAY_INTERFACE : CGI/1.1
SERVER_PROTOCOL   : HTTP/1.0
SERVER_NAME       : www.zeus.co.uk
SERVER_PORT       : 80
REQUEST_METHOD    : GET
REMOTE_HOST       : pc203.zeus.co.uk
REMOTE_ADDR       : 10.0.0.14
HTTP_USER_AGENT   : Mozilla/4.0b5 [en] (Win95; I)
DATE_LOCAL        : 06:12:16 PM 06/02/97
DATE_GMT          : 05:12:16 PM 06/02/97
</pre>
 
</body>
</html>
Content Manager [Administrator] 16 December 2005 Bookmark with del.icio.us Post this article to Digg Post this article to reddit Post this article to Facebook Tweet this article  

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