Some environment variables available to the primary Web server are very useful for dynamic link management. These variables are the same defined in the constants, excluding initial and ## characters.

You can read the environment variables using PHP, executed as CGI, with the following code:

$_SERVER["DWEBPRO_DOCUMENTROOT"]

You can read the environment variables using PHP, executed as ISAPI, with the following code:

dwebpro_getvar('DWEBPRO_DOCUMENTROOT');

You can read the environment variables using ASP Classic 3.0 with the following code:

Request.ServerVariables('DWEBPRO_DOCUMENTROOT');

You can read the environment variables using ASP.NET with the following code:

Environment.GetEnvironmentVariable("DWEBPRO_DOCUMENTROOT");

You can read the environment variables using Perl with the following code:

$ENV{"DWEBPRO_DOCUMENTROOT"}

You can read the environment variables using SSI with the following code:

<!--#echo var="DOCUMENT_ROOT" -->

Refer to the topic DWebPro Internal Constants for more information on DWebPro internal constants.