creare un login con accesso sia come utente che come amministratore

[lippa64]

Vorrei modificare questo codice in modo da poter accedere a tutti gli utenti con un unico utente e password amministratore diverso da tutti gli altri.

<?php require_once('../Connections/condomini.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

mysql_select_db($database_condomini, $condomini);
$query_pdf = "SELECT * FROM indirizzi ORDER BY condominio ASC";
$pdf = mysql_query($query_pdf, $condomini) or die(mysql_error());
$row_pdf = mysql_fetch_assoc($pdf);
$totalRows_pdf = mysql_num_rows($pdf);

mysql_select_db($database_condomini, $condomini);
$query_superuser = "SELECT * FROM superAccesso ORDER BY ID ASC";
$superuser = mysql_query($query_superuser, $condomini) or die(mysql_error());
$row_superuser = mysql_fetch_assoc($superuser);
$totalRows_superuser = mysql_num_rows($superuser);
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
} 

$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}

if (isset($_POST['utente'])) {
  $loginUsername=$_POST['utente'];
  $password=$_POST['password'];
  $MM_fldUserAuthorization = "";
  $MM_redirectLoginSuccess = "documenti_condominio.php?utente=$_POST[utente]&condominio=$_POST[condominio]&citta=$_POST[citta]&via=$_POST[via]";
  $MM_redirectLoginFailed = "area_personale.php";
  $MM_redirecttoReferrer = false;
  mysql_select_db($database_condomini, $condomini);
  
  $LoginRS__query=sprintf("SELECT * FROM indirizzi WHERE utente=%s AND password=%s",
    GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text")); 
   
  $LoginRS = mysql_query($LoginRS__query, $condomini) or die(mysql_error());
  $row_LoginRS = mysql_fetch_assoc($LoginRS);
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
     $loginStrGroup = "";
    
    if (PHP_VERSION >= 5.1) {session_regenerate_id(true);} else {session_regenerate_id();}
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;                         

    if (isset($_SESSION['PrevUrl']) && false) {
      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];    
    }
    header("Location: " . $MM_redirectLoginSuccess );
  }
  else {
    header("Location: ". $MM_redirectLoginFailed );
  }
}
?>

Grazie per i suggerimenti