วิธ๊การนำค่าที่แสดงอยู่ใน Label insert ลงฐานข้อมูล

if(isset($_POST["insert"])){
	
ต้องใช้ค่าอันไหนอ่ะครับ

		mysql_query("SET NAMES UTF8");
			$rst = mysql_query("INSERT INTO `file` VALUES ('', '{$datein}', '{$txtdoc}', '{$atdate}', '{$txtfrom}', '{$txtname}', '{$txtaction}')");
			echo "$rst";
	}
function process_form(){
	$datein = $_POST["date"] ."/". $_POST["mon"] ."/". $_POST["year"] ;
	$txtdoc = $_POST["txtdoc"];
	$atdate = $_POST["date2"] ."/". $_POST["mon2"] ."/". $_POST["year2"];
	$txtfrom = $_POST["txtfrom"];
	$txtname = $_POST["txtname"];
	$txtaction = $_POST["txtaction"];
	//echo $datein;
echo <<<HTMLBLOCK
	<form method="POST" action="">
	<table border="1">
	<tr>
	<td>datein : <b></td><td>$datein</td>
</tr>
	<tr>
	<td>Doc : <b></td><td>$txtdoc</td>
</tr>
	<tr>
	<td>atdate : <b></td><td>$atdate</td>
</tr>
	<tr>
	<td>from : <b></td><td>$txtfrom</td>
</tr>
	<tr>
	<td>name : <b></td><td>$txtname</td>
</tr>
	<tr>
	<td>action : <b></td><td>$txtaction</td>
</tr>
	<tr>
	<td></td><td><input type="submit" name="back" value="back"><input type="submit" name="insert" value="Insert"></td>
	</tr>
	</table>
	</form>
HTMLBLOCK;
}