ช่วยดู เขียนเชคนามสกุลไฟล์ กะเชคขนาดไฟล์ ก่อนอัพโหลดหน่อยครับ

// include top
include $path_to.'top.inc.php';
//include 'check.php';

<div id="resume">
	<form action="application_save.php" method="post" name="application_from" target="_parent" onSubmit="JavaScript:return fncSubmit();" enctype="multipart/form-dat">
   <input name="txt_id_job" type="hidden" value="<?=$_GET['apply'];?>"/>
    <p>Resume :&nbsp;<input name="txt_resume_file" type="file" size="30"> <font color="#F00">*.pdf only</font></p>
</div>
</form>

<script language="javascript">
function fncSubmit()
{
	if(document.application_from.txt_resume_file.value == "")
	{
		alert('Please enter Resume File .pdf only');
		document.application_from.txt_resume_file.focus();
		return false;
	}
	document.application_from.submit();
}
</script>

<?php
// include top
include $path_to.'top.inc.php';
$date_today=date("Y-m-d");	
///////////////////////////////////////Add Application////////////////////////////////
if(move_uploaded_file($_FILES["txt_resume_file"]["tmp_name"],"application/".time()."_".$_FILES["txt_resume_file"]["name"]))
		{
$sql="insert into ty_application(id_job,resume_file)values('$_POST[txt_id_job]','".time()._.$_FILES["txt_resume_file"]["name"]."')";
$q=mysql_query($sql) or die (mysql_error());
}
if($q){
	$sql_confirm="select id from ty_application order by id desc";
	$query=mysql_query($sql_confirm) or die (mysql_error());
	while($rec_confirm=mysql_fetch_assoc($query)){
		header("Location:application_confirm.php?confirm=$rec_confirm[id]");
		exit();
		}
	}
?>