php5-idn (Debian lenny)

[Jillian]

After I installed php5-idn package to system, I got this error:
Fatal error: Only variables can be passed by reference in /var/www/ispcp/gui/include/ispcp-functions.php on line 329

Code:

Code:

function encode_idna($input) {
        if (function_exists('idn_to_ascii')) {
              return idn_to_ascii($input, 'utf-8');
        }

        $IDN = new idna_convert();
        $output = $IDN->encode($input);
        return $output;
}