SQL Connect Excel ครับ มันอ่านค่าExcel ที่เป็นค่าตัวเลขเกิน 11 หลักไม่ได้เหมือนมัน Overflow ครับ งงมาก ๆ

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php
//	 header("content-type:text/html;charset=windows-TIS-620"); 
	//*** Get Document Path ***//
	$strPath = realpath(basename(getenv($_SERVER["SCRIPT_NAME"])));
	
	$OpenFile = "include/testfile.xls";
	
	//*** Connect to ADO ***//
	$strConn = new COM("ADODB.Connection");
	$strConn->Open("DRIVER={Microsoft Excel Driver (*.xls)}; IMEX=1; 
	HDR=NO; Excel 8.0; DBQ=".$strPath."/".$OpenFile.";");
	
	
	

	
	//*** Select Sheet ***//
	$strSQL = "SELECT * FROM [Final_04_Nov_13$]";
	$objRec = $strConn->Execute($strSQL);
	
	//*** Connect SQL SERVER ***/
	
	require("function/Cls_MSSQL.php");
	$myclass = new Cls_MSSQL("localhost","sa","XXXX","DB_XXXX");
	
	//*** Select Data Existing ***//
	$sql = "select * from Final";
	$myclass->GetQuery($sql);
	$checkdata = sqlsrv_fetch_array($myclass->result);
	
	
	if($checkdata["No"] == "")
	{
		echo "ไม่มีข้อมูล";
		
		while(!$objRec->EOF)
		{
 		  	$No = $objRec->Fields["No"]->Value;
		  	$EmployeeID = $objRec->Fields["EmployeeID"]->Value;
		  echo	strval($CardNo = $objRec->Fields["CardNo"]->Value);
		  echo "<br/>";
		  	$ThaiName = $objRec->Fields["ThaiName"]->Value;
          	$EngName = $objRec->Fields["EngName"]->Value;