storing an object in a $_SESSION superglobal

[semsem]

i am trying to pass an object from one page to another, a very simple object defines as follows:

class numbers {

  var one;
  var two;

 function numbers() {
      $this->one = 1;
      $this->two = 4;

}

function add() {
$three = $this->one + $this->two;
return $three;
}

in my first php file i do the following:

file1: insert.php
<?
include 'numbers.php';
session_start();
$test = new numbers();

$_SESSION['sam'] = $test;
header("location: select.php");
?>

file2: select.php
<? start_session();
$sam = $_SESSION['sam'];
echo $sam->add();
?>

i get the following erro:
Fatal error: Unknown(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition numbers of the object you are trying to operate on was loaded before the session was started in F:\portsaidmall\test\session\select.php on line 18

now, i am sure that i included the class before i started the session, i also tried something like

echo $_SESSION['sam']->add();

i get the same error

i tried: $sam = &$_SESSION['sam']; and i still get the same error

i tried serializing, then storing the serialized string in a session, then reading the serialized string in the next page, unserialized it, and tried it as follows:

$test = new numbers();
$my = serialize($test);
$_SESSION['sam'] = $my

in the next page i do:
$sam = $_SESSION['sam'];
$numbers = unserialize($sam);
echo $numbers->add();

and still again, the same error.....

i m sorry for the long post, but i have been searching on this since last night, and i am out of ideas and places to look

thanks in advance
sam

[Weedpacket]

semsem wrote:

file2: select.php
<? start_session();
$sam = $_SESSION['sam'];
echo $sam->add();
?>

You've forgotten to supply select.php with the definition of the "numbers" class. Object methods aren't saved in session variables, so you'll need to include "numbers.php" on this page as well.

[semsem]

thank you, i tried it and it worked great