No need to parse it manually
my $param = do {
local $ENV{'REQUEST_METHOD'} = 'GET';
local $ENV{'CONTENT_LENGTH'};
local @QUERY_PARAM;
my $cgi = CGI->new();
$cgi->param(...)
};
my $cgi;
if ($param) {
$cgi = CGI->new(\&hook);
} else {
$cgi = CGI->new();
}
Untested, even less so with mod_perl.
Update: Added local @QUERY_PARAM;.
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