*แก้ไข* สามารถทำได้ตามที่ต้องการแล้วครับผม ขอบคุณครับผม

<?php
	//*** เช็คสถานะ login ***//
	@session_start();
	if($_SESSION['emp_user'] == "")
	{
		echo ("<script = 'javascript'>alert('Please Login!')
				window.location.href='login.php';</script>");
	}
	else
	{}

	$strSQL = "SELECT * FROM employee WHERE emp_user = '".$_SESSION['emp_user']."' ";
	$objQuery = mysqli_query($con,$strSQL);
	$objResult = mysqli_fetch_array($objQuery,MYSQLI_ASSOC);
?>

<?php
	$Query = mysqli_query($con,$strSQL);
	$Result = mysqli_fetch_array($Query)
?>
<form name="set" id="set" method="post" action="gsf_pdf.php" enctype="multipart/form-data">
  <table width="674" border="0">
    <tr>
      <td height="35" width="329"><strong>ชื่อ-นามสกุล : </strong>
      	<?= $Result['emp_name']?></td>

<?php
	//*** เช็คสถานะ login ***//
	@session_start();
	if($_SESSION['emp_user'] == "")
	{
		echo ("<script = 'javascript'>alert('Please Login!')
				window.location.href='login.php';</script>");
	}
	else
	{}

	$strSQL = "SELECT * FROM employee WHERE emp_user = '".$_SESSION['emp_user']."' ";
	$objQuery = mysqli_query($con,$strSQL);
	$objResult = mysqli_fetch_array($objQuery,MYSQLI_ASSOC);
?>

<form name="set" id="set" method="post" action="gsf_pdf.php" enctype="multipart/form-data">
  <table width="674" border="0">
    <tr>
      <td height="35" width="329"><strong>ชื่อ-นามสกุล : </strong>
      	<?= $objResult['emp_name']?></td>