파일 업로드가 안되어 질문드립니다... 해결법이 필요합니다.. 채택완료

$sql = " insert into {$g5['board_file_table']}

                    set bo_table = '{$bo_table}',

                         wr_id = '{$wr_id}',

                         bf_no = '{$i}',

                         bf_source = '{$upload[$i]['source']}',

                         bf_file = '{$upload[$i]['file']}',

                         bf_content = '{$bf_content[$i]}',

                         bf_fileurl = '{$upload[$i]['fileurl']}',

                         bf_thumburl = '{$upload[$i]['thumburl']}',

                         bf_storage = '{$upload[$i]['storage']}',

                         bf_download = 0,

                         bf_filesize = '".(int)$upload[$i]['filesize']."',

                         bf_width = '".$bf_width."',

                         bf_height = '".$bf_height."',

                         bf_type = '".$bf_type."',

                         bf_datetime = '".G5_TIME_YMDHIS."' ";

        sql_query($sql, 1);

        exi;