ผู้รู้ช่วยดูโค้ดนี้ให้หน่อยครับมัน error เวลา input พร้อมกันตั้งแต่ 2 input ขึ้นไป แล้ว submit

.... 
<?
  $text = $_POST[txtid_in_department];
  $text1 = $_POST[text1];
   if (isset($text)) {
       $sql = "";
    for ($i = 1; $i <= count($text); $i++) {
      if ($text[$i] != "") 
	  {	 $sql  .= "INSERT INTO tbl_in_receive(id_in_receive,id_in_department) VALUES ('$text1[$i]','$text[$i]'); ";
		//$sql .= "UPDATE books_received SET r_pass= '$text[$i]' WHERE id_r in ($text1[$i])";
	  }
	    };
		echo $sql;
		$result=mysql_query($sql,$Connect) or die(mysql_error());
	//	$result1=mysql_query($sql1,$Connect) or die(mysql_error());
  }
?>
          <?
           $sqlreceive="select * from  books_received r,user_login u,tbl_lavel l where r.u_record = u.u_record and r.lavel_r= l.id_lavel and r.r_pass='' ";
			$dbqueryreceive= mysql_query($sqlreceive);
			$Num_Rows = mysql_num_rows($dbqueryreceive);
	$Per_Page = 20;   // Per Page

	$Page = $_GET["Page"];
	if(!$_GET["Page"])
	{
		$Page=1;
	}

	$Prev_Page = $Page-1;
	$Next_Page = $Page+1;

	$Page_Start = (($Per_Page*$Page)-$Per_Page);
	if($Num_Rows<=$Per_Page)
	{
		$Num_Pages =1;
	}
	else if(($Num_Rows % $Per_Page)==0)
	{
		$Num_Pages =($Num_Rows/$Per_Page) ;
	}
	else
	{
		$Num_Pages =($Num_Rows/$Per_Page)+1;
		$Num_Pages = (int)$Num_Pages;
	}


	$sqlreceive .=" order by r.id_r desc LIMIT $Page_Start , $Per_Page";
	$dbqueryreceive = mysql_query($sqlreceive);
	$x=1;
	while($objResult = mysql_fetch_array($dbqueryreceive))
	{

	if($bg == "#66ffff") { //ส่วนของการ สลับสี 
$bg = "#ffffff";
} else {
$bg = "#66ffff";
}
	?>
    <form name="form1" method="post" action="send_after_pass.php">
          <tr bgcolor="<?=$bg?>">
            <td height="23" valign="middle" class="formpanel2"> <?=$objResult ["id_r"];?> </td>
                <td valign="middle" class="formpanel2"><?=$objResult ["num_r"];?></td>
                 <td valign="middle" class="formpanel2"><?=$objResult ["date_r"];?></td>
                   <td valign="middle" class="formpanel2"><?=$objResult ["from_r"];?></td>
                    <td valign="middle" class="formpanel2"><?=$objResult ["to_r"];?></td>
                     <td valign="middle" class="formpanel2"><?=$objResult ["title_r"];?></td>
                   <td valign="middle" class="formpanel2"><?=$objResult ["n_lavel"];?></td>
                   <td valign="middle" class="formpanel2"><?=$objResult ["u_n_name"];?></td>
                   <td align="center" valign="middle" class="formpanel2"><select type="text" name="txtid_in_department[<?=$x;?>]" id='txtid_in_department'  class="formpanel2">
					    <option value="">เลือกฝ่าย </option>
                        <option value="1">ฝ่ายบริหาร</option>
                        <option value="2">ฝ่ายส่งเสริมฯ</option>
                        <option value="3">ฝ่ายต่างด้าว</option>
                        <option value="4">ฝ่ายตรวจฯ</option>
                        <option value="5">ผู้อำนวยการ</option>
                   </select></td>
          </tr>
          <input type="hidden"name="text1[<?=$x;?>]" value="<?=$objResult ["id_r"];?>" />
          <?
		  
		  $x++;
		  }
		  ?>
     
          <tr>
            <td height="338" >&nbsp;</td>
                <td></td>
                <td></td>
                <td></td>
                <td></td>
                <td></td>
                <td></td>
                <td></td>
                <td></td>
          </tr>
          <tr>
            <td height="27" colspan="9" valign="top" ><div align="center"><input name="btnAdd" type="submit" value="บันทึก" />
              &nbsp;&nbsp;&nbsp;&nbsp;<input name="btnReset" type="reset" value="ยกเลิก" /></div></td>
                        </tr>
          
             </form>