ช่วยดูไฟล์ php ให้หน่อยค่ะมัน error ค่ะ mysql_fetch_array(): supplied argument is not a valid MySQL result resource

<?
	$objConnect = mysql_connect("localhost","root","root");
	$objDB = mysql_select_db("movedb,tplibrary");

	
	$strID = $_POST["sID"];
	$strPassword = $_POST["sPassword"];
	$strMEM_ID=$_POST["sMEM_ID"];
	$strSQL = "SELECT * FROM member WHERE 1 
		AND ID = '".$strID."'  
		AND Password = '".$strPassword."'
		AND MEM_ID = '".$strMEM_ID."'
		";

	$objQuery = mysql_query($strSQL);
	$objResult = mysql_fetch_array($objQuery);
	$intNumRows = mysql_num_rows($objQuery);
	if($intNumRows==0)
	{
		$arr["Status"] = "0";
		$arr["ID"] = "0";
		$arr["MEM_ID"] = "0";
		$arr["Message"] = "Username and Password ไม่ถูกต้อง";
		
		echo json_encode($arr);
		exit();
	}
	else
	{
		$arr["Status"] = "1";
		$arr["ID"] = $objResult["ID"];
		$arr["MEM_ID"]=$objResult["MEM_ID"];
		$arr["Message"] = "Login Successfully";

		echo json_encode($arr);
		exit();
	}

	/**
	return 
		 // (0=Failed , 1=Complete)
		 // ID,MEM_ID
		 // Error Message
	*/
	
	mysql_close($objConnect);
	
?>