Requesting help with session class

[laidbackwebsage]

I am having 2 problems -- probably related -- with the Sessions class I am writing (please see below):

1. A new session id is generated every time the page changes

2. As far as I can tell, the session cookie is never generated

I should add that the session data is being written to the database correctly.

Any thoughts on what I have overlooked that would cause this?

Many thanks!

<?php
// CREATE TABLE IF NOT EXISTS SessionTable
// (
//   session_id varchar(32) collate utf8_bin NOT NULL default '',
//   session_ts timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
//   session_data text collate utf8_bin,
//   PRIMARY KEY  (session_id)
// ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Session Data';

class Session
{
    // Properties
    protected $sessionTimeout   =   NULL;
    protected $dbHandle         =   NULL;
    protected $sessionDbTable   =   NULL;
    protected $sessionName      =   NULL;
    protected $sessionId        =   NULL;

// Methods
public function __construct
(
    $sessionTimeout                 =   1800,
    $dbh                            =   NULL,
    $sessionDbTable                 =   NULL,
    $sessionName                    =   NULL
)
{
    ini_set('session.gc_maxlifetime', $sessionTimeout);
    $this->sessionTimeout   =   $sessionTimeout;

    if ( ( ! is_null( $dbh ) ) && ( is_object( $dbh ) ) )
    {
        $this->dbHandle =   $dbh;
    }

    if ( ( ! is_null( $sessionDbTable ) ) &&
         ( is_string( $sessionDbTable ) ) )
    {
        $this->sessionDbTable =   $sessionDbTable;
    }

    if ( ( ! is_null( $sessionName ) ) &&
         ( is_string( $sessionName ) ) )
    {
        ini_set( "session.name", $sessionName );
        $this->sessionName  =   $sessionName;
    }

    session_set_save_handler
    (
        array(&$this, 'open'),
        array(&$this, 'close'),
        array(&$this, 'read'),
        array(&$this, 'write'),
        array(&$this, 'destroy'),
        array(&$this, 'gc')
    );

    register_shutdown_function('session_write_close');

    ini_set('session.use_cookies', 1);

    session_set_cookie_params
    (
        $this->sessionTimeout,     // Length of session
        '/',                       // Cookie's domain
        $_SERVER[ 'SERVER_NAME' ] . '/arsfabulae.com', // Server the session is coming from
        0,                         // Is the session secure?
        1                          // Is the session HTTP only?
    );

    error_log("Cookie Parms: " . print_r(session_get_cookie_params(),1));

    session_start();

    $this->setSessionId();
}

public function open( $path, $name ) { return is_object( $this->dbHandle ); }

public function close() { return TRUE; }

public function read( $session_id  )
{
    $sql    =   "SELECT session_data FROM " . $this->sessionDbTable . ' ' .
                "WHERE session_id = '$session_id' " .
                "AND (UNIX_TIMESTAMP() - UNIX_TIMESTAMP( session_ts) ) <= " .
                $this->sessionTimeout;

    $req    =   $this->dbHandle->query( $sql );
    if ( PEAR::isError( $req ) ) { throw new DbException( $req ); }
    else
    {
        $row    =   $req->fetchRow();
        return $row[ 'session_data' ];
    }
}

public function write( $session_id, $session_data  )
{
    $sql    =   "REPLACE INTO " . $this->sessionDbTable . ' ' .
                "VALUES('$session_id', NOW(), '$session_data') ";
    $req    =   $this->dbHandle->query( $sql );
    if ( PEAR::isError( $req ) ) { throw new DbException( $req ); }
    return TRUE;
}

public function destroy( $session_id )
{
    $sql    =   "DELETE FROM " .  $this->sessionDbTable . ' ' .
                "WHERE session_id = '$session_id'";

    $req    =   $this->dbHandle->query( $sql );
    if ( PEAR::isError( $req ) ) { throw new DbException( $req ); }
    return TRUE;
}

public function gc ( $sessionTimeout )
{
    $sql    =   "DELETE FROM " .  $this->sessionDbTable . ' ' .
                "WHERE (UNIX_TIMESTAMP() - UNIX_TIMESTAMP( session_ts) ) > " .
                $this->sessionTimeout;
    $req    =   $this->dbHandle->query( $sql );
    if ( PEAR::isError( $req ) ) { throw new DbException( $req ); }
    return TRUE;
}

public function getSessionName() { return $this->sessionName; }

protected function setSessionId()
{
    $this->sessionId    =   session_id();
}

public function getSessionId()   { return $this->sessionId; }

public function setSessionVariable( $name, $value )
{
    $_SESSION[ $name ] = $value;
    return TRUE;
}

public function getSessionValue( $name ) { return $_SESSION[ $name ]; }
}
?>