mysql ใช้ find_in_set query แล้วข้อมูลออกมาไม่หมด เชิญด้านในครับ

while($data = $sql->fetch(PDO::FETCH_ASSOC)) {
    $i++;
    $arr = array();
    $arr[] = $data['sel'];
  } //while

 $ex = explode(',', $arr[0]);
 $txt = array();
 $array_ipad = array();
 $array_lenovo = array();
 $array_surface = array();
 $lenovo = array();
 $ipad = array();
 $surface = array();

foreach ($ex as $key => $val) {
        $txt = explode('-', $ex[$key]);
        if ($txt[0] == '121/54') {
          $array_lenovo = explode('(', $txt[4]);
          // $c = $b[0];

          array_push($lenovo, $array_lenovo[0]);
        }
          if ($txt[0] == '1155') {
          $array_ipad = explode('(', $txt[7]);
          // $c = $b[0];

          array_push($ipad, $array_ipad[0]);
        }
          if ($txt[0] == '1159') {
          $array_surface = explode('(', $txt[4]);
          // $c = $b[0];

          array_push($surface, $array_surface[0]);
        }
  }

   $str_count_lenovo = count($lenovo)-1;
   $code_lenovo = "คอมพิวเตอร์พกพา Lenovo รหัสครุภัณฑ์ 121/54-1312-060-03-";
            foreach ($lenovo as $key => $value) {
              if ($str_count_lenovo == $key) {
                 $code_lenovo .= $value;
              }
              else {
                 $code_lenovo .= $value.',';
              }
            }
          $code_lenovo .= "(30)";
          //echo $code_lenovo."<br>";

   $str_count_ipad = count($ipad)-1;
   $code_ipad = "Apple ipad รหัสครุภัณฑ์ 1155-1312-025-43-1(1)/7-1(1)/2-1(1)/13-";
            foreach ($ipad as $key => $value) {
              if ($str_count_ipad == $key) {
                $code_ipad .= $value;
              }
              else {
                $code_ipad .= $value.',';
              }
            }
             $code_ipad .= "(25)";
             //echo $code_ipad."<br>";

   $str_count_surface = count($surface)-1;
   $code_surface = "Microsoft surface รหัสครุภัณฑ์ 1159-1312-060-08-";
            foreach ($surface as $key => $value) {
              if ($str_count_surface == $key) {
                $code_surface .= $value;
              }
              else {
                $code_surface .= $value.',';
              }
            }
             $code_surface .= "(15)/มทร.11ค/งปม.2559";
             //echo $code_surface;

SELECT
(SELECT GROUP_CONCAT(code ORDER BY machine_id SEPARATOR ',')
  FROM tbl_machine 
    WHERE FIND_IN_SET(tbl_machine.machine_id,GROUP_CONCAT(tbl_select_item.machine)) ) AS sel,

	tbl_borrow_logs.`user`,
	tbl_borrow_logs.fullname,
	tbl_borrow_logs.log_id,
	tbl_borrow_logs.depart,
	tbl_select_item.amount,
	tbl_borrow_logs.tel1,
	tbl_borrow_logs.tel2,
	tbl_borrow_logs.obj,
	tbl_borrow_logs.logs_status,
	tbl_borrow_logs.loan_by,
	tbl_borrow_logs.approve_by,
	tbl_borrow_logs.start_date,
	tbl_borrow_logs.end_date,
	tbl_borrow_logs.date_receive,
	tbl_borrow_logs.date_return,
	tbl_borrow_logs.place,
	tbl_borrow_logs.signature_user,
	tbl_borrow_logs.signature_admin,
	tbl_borrow_logs.signature_super_admin,
	tbl_borrow_logs.return_signature_user,
	DATEDIFF(end_date, start_date) AS totalday,
	DATE_FORMAT(start_date, '%d') AS thaidate,
	DATE_FORMAT(start_date, '%Y') + 543 AS thaiyear,
	DATE_FORMAT(start_date, '%H.%i') AS thaitime,
	DATE_FORMAT(end_date, '%d') AS thaidate2,
	DATE_FORMAT(end_date, '%Y') + 543 AS thaiyear2,
	DATE_FORMAT(end_date, '%H.%i') AS thaitime2,
	DATE_FORMAT(date_receive, '%d') AS thaidate3,
	DATE_FORMAT(date_receive, '%Y') + 543 AS thaiyear3,
	DATE_FORMAT(date_receive, '%H.%i') AS thaitime3,
	DATE_FORMAT(date_return, '%d') AS thaidate4,
	DATE_FORMAT(date_return, '%Y') + 543 AS thaiyear4,
	DATE_FORMAT(date_return, '%H.%i') AS thaitime4,
	tbl_select_item.machine
FROM
	tbl_borrow_logs
INNER JOIN tbl_select_item ON tbl_borrow_logs.log_id = tbl_select_item.logs_id
WHERE
	log_id = 1
GROUP BY
	date_borrow