I have a problem. As is shown I've made an abstract class with magic methods to be used in my classes. When i try to use the class Pratica (extension of StandardClass) and I try to acces to a simple property PHP returns this error: Trying to get property of non-object in /var/www/property/htdocs/pratiche/dettaglio_pratica.inc.php on line 40. The problem is that in my local server it works but in the company server does not. Is a configuration problem? or is a code problem? The company server uses PHP 5.3.3 and in locale I use PHP 5.3.6.
Anyone can help me? many thanks. Federico
Here is an extraction of the code:
abstract class standardClass {
protected $data = array();
public function __construct() {
}
public function __set($property, $value) {
$this->data[$property] = $value;
}
public function __get($property) {
if (isset($this->data[$property]) === true && array_key_exists($property, $this->data)) {
return $this->data[$property];
}
}
public function __unset($property) {
unset($this->data[$property]);
}
public function __isset($property) {
return isset($this->data[$property]);
}
}
class Pratica extends StandardClass {
const _NOME_SESSIONE_PRATICA_ = "pratica";
public function __construct($id_pratica) {
$this->load($id_pratica);
}
public static function init($id_pratica = null) {
Session::init();
Session::sessionStart();
if (Session::existVar(self::_NOME_SESSIONE_PRATICA_) == true) {
if (is_string(Session::getVar(self::_NOME_SESSIONE_PRATICA_)) == false) {
return new Pratica($id_pratica);
}
else {
return unserialize(Session::getVar(self::_NOME_SESSIONE_PRATICA_));
}
}
return new Pratica($id_pratica);
}
private function load($id) {
global $db;
$sql = <<<EOQ
SELECT *
FROM elenco_pratiche
WHERE id = $id;
EOQ;
$result = $db->sql($sql);
if ($db->righe() > 0) {
$riga = $db->riga($result);
$this->modify($riga);
}
}
public function modify($pratica) {
foreach ($pratica as $key => $value) {
$this->data[$key] = $value;
}
}
public function __destruct() {
Session::addVar(self::_NOME_SESSIONE_PRATICA_, serialize($this));
}
}
class Session {
protected $log;
static public $is_started = false;
static private $auto_start = false;
static private $session_save_path = null;
static private $session_id = null;
static private $session_name = null;
static private $cookie__lifetime = null;
static private $cookie_path = null;
static private $use_cookies = false;
static private $use_only_cookies = false;
static public function init() {
if (ini_get("session.auto_start") == 1) {
self::$auto_start = true;
self::$is_started = true;
}
elseif (session_id() <> "") {
self::$is_started = true;
}
self::$session_save_path = ini_get("session.save_path");
if (ini_get("session.use_cookies") == 1) {
self::$use_cookies = true;
}
if (ini_get("session.use_only_cookies") == 1) {
self::$use_only_cookies = true;
}
}
static public function isSessionAutostart() {
return self::$auto_start;
}
static public function isStarted() {
return self::$is_started;
}
static public function sessionStart() {
if (self::$auto_start == false && self::$is_started == false) {
session_start();
self::$session_id = session_id();
self::$session_name = session_name();
self::$is_started = true;
}
}
static public function setSessionId($id) {
session_id($id);
self::$session_id = session_id();
}
static public function getSessionId() {
return(session_id());
}
static public function addVar ($name,$value) {
if (self::$is_started == true) {
$_SESSION[$name] = $value;
}
}
static public function getVar ($name) {
if (self::$is_started == true) {
if (isset($_SESSION[$name]) == true) {
return $_SESSION[$name];
}
else {
return false;
}
}
}
static public function deleteVar($name) {
if (isset($_SESSION[$name]) == true) {
unset($_SESSION[$name]);
}
}
static public function existVar($name) {
$x = isset($_SESSION[$name]);
return isset($_SESSION[$name]);
}
static public function dump($id = null) {
$log = new log();
if (is_null($id) == true) {
foreach ($_SESSION as $key => $value) {
$log->user(basename(__FILE__) . "_SESSION[" . $key . "] = " . $value,"federico");
}
}
else {
$log->user(basename(__FILE__) . "_SESSION[" . $id . "] = " . $_SESSION[$id],"federico");
}
}
static public function closeSession() {
if (self::$is_started == true) {
session_unset();
session_destroy();
self::$is_started = false;
}
}
}
$pratica = Pratica::init($id);
$id_pratica = $pratica->id;