Check out CGI's Dump method, already in there!
in reply to Debugging the CGI environment
DUMPING OUT ALL THE NAME/VALUE PAIRS
The Dump() method produces a string consisting of all the
query's name/value pairs formatted nicely as a nested
list. This is useful for debugging purposes:
Produces something that looks like:
As a shortcut, you can interpolate the entire CGI object
into a string and it will be replaced with the a nice HTML
dump shown above:
print "<H2>Current Values</H2> $query\n";
Also, beware! You should HTML-entitize your output, or not use text/html,
when you do this.
-- Randal L. Schwartz, Perl hacker