PHP Decode

<?php 
 
header("Content-Type:text/html; charset=utf-8"); 
 
require_once("mysql.inc.php"); 
 
if($_POST['result'] == "n"){ 
	$instead = ""; 
}else{ 
	$instead = $_POST['instead']; 
} 
 
if($_POST["personnel_id"] != '') { 
 
$check_dayoff = "UPDATE personnel_dayoff SET result =  
 
'{$_POST['result']}', check_date = '{$_POST['check_date']}',  
 
reply = '{$_POST['reply']}', instead = '$instead' WHERE personnel_id = '{$_POST['personnel_id']}' "; 
 
mysql_query($check_dayoff); 
 
// 
$instead_sql = "UPDATE instead_scheduling SET instead = '$instead' WHERE account = '{$_POST['day_account']}'"; 
mysql_query($instead_sql); 
 
header("Location: check_personnel_dayoff.php"); 
   
} else { 
   
  header("Location: check_dayoff_content.php"); 
} 
 
?>