Fatal error: Call to a member function num_rows() on a non-object in
Publicado por german (21 intervenciones) el 26/12/2013 18:37:15
Fatal error: Call to a member function num_rows() on a non-object in /home/gersofts/public_html/pos/system/libraries/Session.php on line 209
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/**
* Fetch the current session data if it exists
*
* @access public
* @return bool
*/function sess_read()
{ // Fetch the cookie
$session = $this->CI->input->cookie($this->sess_cookie_name);
// No cookie? Goodbye cruel world!...
if ($session === FALSE)
{log_message('debug', 'A session cookie was not found.');
return FALSE;
} // Decrypt the cookie data
if ($this->sess_encrypt_cookie == TRUE)
{$session = $this->CI->encrypt->decode($session);
}else
{ // encryption was not used, so we need to check the md5 hash
$hash = substr($session, strlen($session)-32); // get last 32 chars
$session = substr($session, 0, strlen($session)-32);
// Does the md5 hash match? This is to prevent manipulation of session data in userspace
if ($hash !== md5($session.$this->encryption_key))
{log_message('error', 'The session cookie data did not match what was expected. This could be a possible hacking attempt.');
$this->sess_destroy();
return FALSE;
} } // Unserialize the session array
$session = $this->_unserialize($session);
// Is the session data we unserialized an array with the correct format?
if ( ! is_array($session) OR ! isset($session['session_id']) OR ! isset($session['ip_address']) OR ! isset($session['user_agent']) OR ! isset($session['last_activity']))
{$this->sess_destroy();
return FALSE;
} // Is the session current?
if (($session['last_activity'] + $this->sess_expiration) < $this->now)
{$this->sess_destroy();
return FALSE;
} // Does the IP Match?
if ($this->sess_match_ip == TRUE AND $session['ip_address'] != $this->CI->input->ip_address())
{$this->sess_destroy();
return FALSE;
} // Does the User Agent Match?
if ($this->sess_match_useragent == TRUE AND trim($session['user_agent']) != trim(substr($this->CI->input->user_agent(), 0, 50)))
{$this->sess_destroy();
return FALSE;
} // Is there a corresponding session in the DB?
if ($this->sess_use_database === TRUE)
{$this->CI->db->where('session_id', $session['session_id']);
if ($this->sess_match_ip == TRUE)
{$this->CI->db->where('ip_address', $session['ip_address']);
}if ($this->sess_match_useragent == TRUE)
{$this->CI->db->where('user_agent', $session['user_agent']);
}$query = $this->CI->db->get($this->sess_table_name);
// No result? Kill it!
if ($query->num_rows() == 1)--------------------------------------- aki señala el error
{$this->sess_destroy();
return FALSE;
} // Is there custom data? If so, add it to the main session array
$row = $query->row();
if (isset($row->user_data) AND $row->user_data != '')
{$custom_data = $this->_unserialize($row->user_data);
if (is_array($custom_data))
{foreach ($custom_data as $key => $val)
{$session[$key] = $val;
} } } } // Session is valid!
$this->userdata = $session;
unset($session);
return TRUE;
} // --------------------------------------------------------------------
/**
* Write the session data
*
* @access public
* @return void
*/function sess_write()
{ // Are we saving custom data to the DB? If not, all we do is update the cookie
if ($this->sess_use_database === FALSE)
{$this->_set_cookie();
return;
} // set the custom userdata, the session data we will set in a second
$custom_userdata = $this->userdata;
$cookie_userdata = array();
// Before continuing, we need to determine if there is any custom data to deal with.
// Let's determine this by removing the default indexes to see if there's anything left in the array
// and set the session data while we're at it
foreach (array('session_id','ip_address','user_agent','last_activity') as $val)
{unset($custom_userdata[$val]);
$cookie_userdata[$val] = $this->userdata[$val];
} // Did we find any custom data? If not, we turn the empty array into a string
// since there's no reason to serialize and store an empty array in the DB
if (count($custom_userdata) === 0)
{$custom_userdata = '';
}else
{ // Serialize the custom data array so we can store it
$custom_userdata = $this->_serialize($custom_userdata);
} // Run the update query
$this->CI->db->where('session_id', $this->userdata['session_id']);
$this->CI->db->update($this->sess_table_name, array('last_activity' => $this->userdata['last_activity'], 'user_data' => $custom_userdata));
// Write the cookie. Notice that we manually pass the cookie data array to the
// _set_cookie() function. Normally that function will store $this->userdata, but
// in this case that array contains custom data, which we do not want in the cookie.
$this->_set_cookie($cookie_userdata);
} // --------------------------------------------------------------------Valora esta pregunta
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