วิธีเก็บข้อมูล Textbox array[] ลงใน ฐานข้อมูล ทำยังไงครับ

<?php //insert sql to databases
$EMP_NO = $_POST['EMP_NOO'];
	$depart = $_POST['departt'];
	$types = $_POST['typess'];
	$issue = $_POST['issuee'];
	$doc = $_POST['docc'];
	$sn = $_POST['snn'];

$a=date("m/d/Y H:i:s");
if(isset($EMP_NO)&& isset($depart) && isset($types ) && isset($issue) && isset($doc) && isset($sn) )
 {

  if($_POST["postId"] != '')  
  {  
    //update post  
    $sql = "UPDATE rework_process SET emp_no = '".trim($EMP_NO)."', department = '".trim($depart)."' , type = '".trim($types)."' , issue = '".trim($issue)."', doc = '".trim($doc)."', sn = '".trim($sn)."'
	
	
	WHERE post_id = '".$_POST["postId"]."'";  
    mssql_query($sql);  
  }  
  else  
  {  
	foreach( $sn as $key => $n ) {
    //insert post  
  $sql = "INSERT INTO rework_process(emp_no,department,type,issue,doc,sn,date_in, status) VALUES ('".trim($EMP_NO)."','".trim($depart)."','".trim($types)."','".trim($issue)."','".trim($doc)."','".trim($n)."','".trim($a)."', 'pass')";    
    mssql_query($sql);  
    }
  }
 } 
?>