มีปัญหา อัพโหลดไฟล์ Excel ด้วยฟังก์ชั่น $_file แล้วไม่สามารถเปิดอ่านไฟล์ที่อัพโหลดได้ครับ

<?php
////////////////////////////////////////////////////
$file = $_FILES['fileupload']['name'];

if($_FILES['fileupload']['type'] == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
	{ $typefile = "xlsx"; }
else if($_FILES['fileupload']['type'] == "application/vnd.ms-excel")
	{ $typefile = "xls"; }
else
	{ $typefile = $_FILES['fileupload']['type']; }
$DMY = date(dmY);
$Excelfilename = "ExcelFile".$DMY;
/** PHPExcel */
require_once 'Classes/PHPExcel.php';
/** PHPExcel_IOFactory - Reader */
include 'Classes/PHPExcel/IOFactory.php';
///////////////////////////////////////////////////
$typeUP = array("xlsx","xls");
//$typeUP = array("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet","application/vnd.ms-excel");
if(!in_array($typefile,$typeUP))
{ 
	$alert = "<center>ประเภทไฟล์ไม่ถูกต้อง อนุญาตให้ใช้ได้เฉพาะไฟล์ที่มีนามสกุลเป็น .xls (Excel 2003) หรือ .xlsx (Excel 2007) เท่านั้น<br><br>ประเภทไฟล์ของเอกสารนี้เป็นประเภท $typefile</center>";
}
else
{
	// File Excel 2007
	if($typefile == "xlsx")
	{
		if(move_uploaded_file ($_FILES['fileupload']['tmp_name'],"ExcelFile/".$Excelfilename.".xlsx"))
		{
				/////////////////////////////////// Import to MySQL ///////////////////////////////////////////
				$filename = "ExcelFile".date("dmY");
				$inputFileName = "ExcelFile/$filename.xlsx";  
				$inputFileType = PHPExcel_IOFactory::identify($inputFileName);  
				$objReader = PHPExcel_IOFactory::createReader($inputFileType);  
				$objReader->setReadDataOnly(true);  
				$objPHPExcel = $objReader->load($inputFileName);  
				
				$objWorksheet = $objPHPExcel->setActiveSheetIndex(0);
				$highestRow = $objWorksheet->getHighestRow();
				$highestColumn = $objWorksheet->getHighestColumn();
				
				$headingsArray = $objWorksheet->rangeToArray('A1:'.$highestColumn.'1',null, true, true, true);
				$headingsArray = $headingsArray[1];
				
				$r = -1;
				$namedDataArray = array();
				for ($row = 2; $row <= $highestRow; ++$row) {
					$dataRow = $objWorksheet->rangeToArray('A'.$row.':'.$highestColumn.$row,null, true, true, true);
					if ((isset($dataRow[$row]['A'])) && ($dataRow[$row]['A'] > '')) {
						++$r;
						foreach($headingsArray as $columnKey => $columnHeading) {
							$namedDataArray[$r][$columnHeading] = $dataRow[$row][$columnKey];
						}
					}
				}
				//echo '<pre>';
				//var_dump($namedDataArray);
				//echo '</pre><hr />';
				$i = 0;
				foreach ($namedDataArray as $result) {
						$i++;
						$strSQL = "";
						$strSQL .= "INSERT INTO member ";
						$strSQL .= "(IDstd,Username,Password,Prefix,fname,lname,class,room,yearin,rang,pic,status,note) ";
						$strSQL .= "VALUES ";
						$strSQL .= "('".$result["IDstd"]."','".$result["Username"]."' ";
						$strSQL .= ",'".md5($result["Password"])."','".$result["Prefix"]."' ";
						$strSQL .= ",'".$result["fname"]."','".$result["lname"]."' ";
						$strSQL .= ",'".$result["class"]."','".$result["room"]."' ";
						$strSQL .= ",'".$result["yearin"]."','".$result["rang"]."' ";
						$strSQL .= ",'".$result["pic"]."','".$result["status"]."' ";
						$strSQL .= ",'".$result["note"]."') ";
						mysql_query($strSQL) or die(mysql_error());
						echo "Row $i Inserted...<br>";
				}
				mysql_close();
			$alert = "อัพโหลดไฟล์  $file เรียบร้อยแล้ว : File Type Excel 2007";
		}
		else
		{
			$alert = "ไม่สามารถอัพโหลดไฟล์ได้";
		}
	}
	// File Excel 2003
	else if($typefile == "xls")
	{
		if(move_uploaded_file ($_FILES['fileupload']['tmp_name'],"ExcelFile/".$Excelfilename.".xls"))
		{
				/////////////////////////////////// Import to MySQL ///////////////////////////////////////////
				$filename = "ExcelFile".date("dmY");
				$inputFileName = "ExcelFile/$filename.xls";  
				$inputFileType = PHPExcel_IOFactory::identify($inputFileName);  
				$objReader = PHPExcel_IOFactory::createReader($inputFileType);  
				$objReader->setReadDataOnly(true);  
				$objPHPExcel = $objReader->load($inputFileName);  
				
				$objWorksheet = $objPHPExcel->setActiveSheetIndex(0);
				$highestRow = $objWorksheet->getHighestRow();
				$highestColumn = $objWorksheet->getHighestColumn();
				
				$headingsArray = $objWorksheet->rangeToArray('A1:'.$highestColumn.'1',null, true, true, true);
				$headingsArray = $headingsArray[1];
				
				$r = -1;
				$namedDataArray = array();
				for ($row = 2; $row <= $highestRow; ++$row) {
					$dataRow = $objWorksheet->rangeToArray('A'.$row.':'.$highestColumn.$row,null, true, true, true);
					if ((isset($dataRow[$row]['A'])) && ($dataRow[$row]['A'] > '')) {
						++$r;
						foreach($headingsArray as $columnKey => $columnHeading) {
							$namedDataArray[$r][$columnHeading] = $dataRow[$row][$columnKey];
						}
					}
				}
				//echo '<pre>';
				//var_dump($namedDataArray);
				//echo '</pre><hr />';
				$i = 0;
				foreach ($namedDataArray as $result) {
						$i++;
						$strSQL = "";
						$strSQL .= "INSERT INTO member ";
						$strSQL .= "(IDstd,Username,Password,Prefix,fname,lname,class,room,yearin,rang,pic,status,note) ";
						$strSQL .= "VALUES ";
						$strSQL .= "('".$result["IDstd"]."','".$result["Username"]."' ";
						$strSQL .= ",'".md5($result["Password"])."','".$result["Prefix"]."' ";
						$strSQL .= ",'".$result["fname"]."','".$result["lname"]."' ";
						$strSQL .= ",'".$result["class"]."','".$result["room"]."' ";
						$strSQL .= ",'".$result["yearin"]."','".$result["rang"]."' ";
						$strSQL .= ",'".$result["pic"]."','".$result["status"]."' ";
						$strSQL .= ",'".$result["note"]."') ";
						mysql_query($strSQL) or die(mysql_error());
						echo "Row $i Inserted...<br>";
				}
				mysql_close();
			$alert = "อัพโหลดไฟล์  $file เรียบร้อยแล้ว : File Type Excel 2003";
		}
		else
		{
			$alert = "ไม่สามารถอัพโหลดไฟล์ได้";
		}
	}
	else
	{
		$alert = "ประเภทไฟล์เอกสาร Excel ที่ไม่รู้จัก กรุณาใช้ไฟล์เอกสารของ Excel 2003  หรือ  Excell 2007";
	}
}
?>