Last updated on
Apr 27, 2021
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Also applies to ColdFusion
Because some browsers do not support some CGI variables, ColdFusion always returns true when it tests for the existence of a CGI variable, regardless of whether the browser supports the variable. To determine if a CGI server exists, test for the availability, as the following example shows:
<cfscript>
myServer=cgi.SERVER_NAME;
if (myServer==cgi.SERVER_NAME)
WriteOutput("Server exists");
else
WriteOutput("Server does not exist");
</cfscript>
<cfscript>
myServer=cgi.SERVER_NAME;
if (myServer==cgi.SERVER_NAME)
WriteOutput("Server exists");
else
WriteOutput("Server does not exist");
</cfscript>
<cfscript>
myServer=cgi.SERVER_NAME;
if (myServer==cgi.SERVER_NAME)
WriteOutput("Server exists");
else
WriteOutput("Server does not exist");
</cfscript>
To display all CGI variables, use the following code.
<cfscript>
WriteDump(cgi);
</cfscript>
<cfscript>
WriteDump(cgi);
</cfscript>
<cfscript>
WriteDump(cgi);
</cfscript>
