<?phpfunction filter_input_general( $input ){return htmlspecialchars(iconv('UTF-8', 'UTF-8', $input), ENT_QUOTES, 'UTF-8');}function filter_input_username( $input ){return ereg_replace("[^[:alnum:]\_\.\+\-]", "", $input );}function filter_quotes( $input ){return ereg_replace('["\'`]', '', $input );}function filter_shell( $input ){return ereg_replace('["\'` \t\r\n]', '', $input );}?>