Allows you to get a CGI parameter without worrying about whether it is defined (a big problem i had with use diagnostics). It also allows for a default value.
Update: Added a default default value....
use CGI;

# Gets a HTTP paramater from CGI->param() with error checking.
# $_[0] = param to get
# $_[1] = default value if the param is not defined
sub getparam
{
  $query = new CGI;
  ($param, $value) = (@_,"");
  if (defined(CGI->param($param)))
  {
    return CGI->param($param);
  } else {
    return $value;
  }
}

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In reply to Get a CGI::param() variable with undef checking. by monoxide

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