[PHP] Re: Understanding sessions

[K.Bogac Bokeer]

You can use

$sid = session_name().'='.session_id();

instead of SID or you can define o constant

define('SID', session_name().'='.session_id());

at the start of script ( after session_start() ).

Todd Cary wrote:
I am trying to understand sessions are done with php.  My "learning 
script" has the following:

  session_start();
  if (isset($_SESSION['firstname'])) {
    $_SESSION['firstname'] = 'Todd';
  } else {
    $_SESSION['firstname'] = 'Nobody';
  }
  echo "SESSION: " . $_SESSION['firstname'] . "<br>";
  echo 'SID: ' . SID . '<br>';
  echo '<br /><a href="page_2.php?' . SID . '">page 2</a>';
SID is always empty.  What have I missed?

Todd
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