ส่งค่า id ไม่ไปครับ.ผมจะให้ส่งค่า id จากหน้า form ที่บันทึกอันแรกแล้วให้ส่งค่า id ไปยัง form อีกหน้าเพื่อให้บันทึกเข้า id ตัวเดิมอ่ะคับ

<?php
if($_POST['action']=="adds")
{
	$id = $_POST['id'];
	$bu_work_name = $_REQUEST['bu_work_name'];
	$bu_work_employer = $_REQUEST['bu_work_employer'];
	$bu_work_designer = $_REQUEST['bu_work_designer'];
	$bu_work_contrac = $_REQUEST['bu_work_contrac'];
	$bu_work_address = $_REQUEST['bu_work_address'];
	$bu_work_conname = $_REQUEST['bu_work_conname'];
	$bu_work_connum = $_REQUEST['bu_work_connum'];
	$bu_work_consign = $_REQUEST['bu_work_consign'];
	$bu_work_start = $_REQUEST['bu_work_start'];
	$bu_work_end = $_REQUEST['bu_work_end'];
	$bu_work_period = $_REQUEST['bu_work_period'];
	$bu_work_tag = $_REQUEST['bu_work_tag'];
	$bu_work_budget = $_REQUEST['bu_work_budget'];
	$bu_work_prepay = $_REQUEST['bu_work_prepay'];
	$bu_work_nonbudget = $_REQUEST['bu_work_nonbudget'];
	$bu_work_penalty = $_REQUEST['bu_work_penalty'];
	$bu_work_costcontrol = $_REQUEST['bu_work_costcontrol'];
	$work_du_id = $_REQUEST['work_du_id'];
	$work_year_id = $_REQUEST['work_year_id'];
	$work_year_id = $_REQUEST['work_year_id'];
	
	$sql  = mysql_query("insert into work_building  set bu_work_name = '$bu_work_name' ,  bu_work_employer = '$bu_work_employer' , bu_work_designer = '$bu_work_designer' , bu_work_contrac = '$bu_work_contrac' , bu_work_address = '$bu_work_address' , bu_work_conname = '$bu_work_conname' , bu_work_connum = '$bu_work_connum' , bu_work_consign = '$bu_work_consign' ,  bu_work_start = '$bu_work_start' ,  bu_work_end = '$bu_work_end' ,  bu_work_period = '$bu_work_period' ,  bu_work_tag = '$bu_work_tag' , bu_work_budget = '$bu_work_budget' , bu_work_prepay = '$bu_work_prepay' , bu_work_nonbudget = '$bu_work_nonbudget' , bu_work_penalty = '$bu_work_penalty' , bu_work_costcontrol = '$bu_work_costcontrol' , work_du_id = '$work_du_id' , work_year_id = '$work_year_id' , last_update = now()") or die(mysql_error());
   if($sql){
	$sql2  = mysql_query("insert into work_building_2  set bu_work_name = '$bu_work_name' ,  bu_work_employer = '$bu_work_employer' , bu_work_designer = '$bu_work_designer' , bu_work_contrac = '$bu_work_contrac' , bu_work_address = '$bu_work_address' , bu_work_conname = '$bu_work_conname' , bu_work_connum = '$bu_work_connum' , bu_work_consign = '$bu_work_consign' ,  bu_work_start = '$bu_work_start' ,  bu_work_end = '$bu_work_end' ,  bu_work_period = '$bu_work_period' ,  bu_work_tag = '$bu_work_tag' , bu_work_budget = '$bu_work_budget' , bu_work_prepay = '$bu_work_prepay' , bu_work_nonbudget = '$bu_work_nonbudget' , bu_work_penalty = '$bu_work_penalty' , bu_work_costcontrol = '$bu_work_costcontrol' , work_du_id = '$work_du_id' , work_year_id = '$work_year_id' , last_update = now()") or die(mysql_error());
	if ($sql2) {echo "";}
	 else {echo "ERROR: " . $sql . "<br>" . $conn->error;}
   } 
   else {echo "Error1: " . $sql . "<br>" . $conn->error;}
   
   
	exit("<script>alert('เพิ่มข้อมูลเรียบร้อยแล้ว');window.location=\"forms_building_tag.php?id=$id\";</script>");
}
?>