Как альтернатива:
$buffer = $ENV{\'QUERY_STRING\'};
if ($ENV{\'REQUEST_METHOD\'} eq "POST") {read(STDIN, $buffer, $ENV{\'CONTENT_LENGTH\'})}
@pairs = split(/&/, $buffer);
foreach $pair (@pairs) {
($name, $value) = split(/=/, $pair);
$name =~ tr/+/ /;
$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
$FORM{$name} = $value;
}
$ffff = $FORM{\'ffff\'};