разрушение сеанса в кодеригере после перенаправления

Это та же проблема, что и при тестировании на IE7 / IE8 .
И я нашел решение здесь: http://www.philsbury.co.uk/blog/code-igniter-sessions

Это проблема, из-за которой кто-то сделал стороннее исправление , он исправляет Session Controller. Оформите, что говорит выше ссылка,

Решение:

1) Для этого вам нужно создать новый файл Session.php в каталоге приложений / библиотек .
2) Скопируйте приведенный ниже исходный код во вновь созданный файл.

 <?php if (!defined('BASEPATH')) exit('No direct script access allowed'); /** * Session class using native PHP session features and hardened against session fixation. * * @package CodeIgniter * @subpackage Libraries * @category Sessions * @author Dariusz Debowczyk * @link http://www.codeigniter.com/user_guide/libraries/sessions.html */ class CI_Session { var $flash_key = 'flash'; // prefix for "flash" variables (eg. flash:new:message) function CI_Session() { $this->object =& get_instance(); log_message('debug', "Native_session Class Initialized"); $this->_sess_run(); } /** * Regenerates session id */ function regenerate_id() { // copy old session data, including its id $old_session_id = session_id(); $old_session_data = $_SESSION; // regenerate session id and store it session_regenerate_id(); $new_session_id = session_id(); // switch to the old session and destroy its storage session_id($old_session_id); session_destroy(); // switch back to the new session id and send the cookie session_id($new_session_id); session_start(); // restore the old session data into the new session $_SESSION = $old_session_data; // update the session creation time $_SESSION['regenerated'] = time(); // session_write_close() patch based on this thread // http://www.codeigniter.com/forums/viewthread/1624/ // there is a question mark ?? as to side affects // end the current session and store session data. session_write_close(); } /** * Destroys the session and erases session storage */ function destroy() { unset($_SESSION); if ( isset( $_COOKIE[session_name()] ) ) { setcookie(session_name(), '', time()-42000, '/'); } session_destroy(); } /** * Reads given session attribute value */ function userdata($item) { if($item == 'session_id'){ //added for backward-compatibility return session_id(); }else{ return ( ! isset($_SESSION[$item])) ? false : $_SESSION[$item]; } } /** * Sets session attributes to the given values */ function set_userdata($newdata = array(), $newval = '') { if (is_string($newdata)) { $newdata = array($newdata => $newval); } if (count($newdata) > 0) { foreach ($newdata as $key => $val) { $_SESSION[$key] = $val; } } } /** * Erases given session attributes */ function unset_userdata($newdata = array()) { if (is_string($newdata)) { $newdata = array($newdata => ''); } if (count($newdata) > 0) { foreach ($newdata as $key => $val) { unset($_SESSION[$key]); } } } /** * Starts up the session system for current request */ function _sess_run() { session_start(); $session_id_ttl = $this->object->config->item('sess_expiration'); if (is_numeric($session_id_ttl)) { if ($session_id_ttl > 0) { $this->session_id_ttl = $this->object->config->item('sess_expiration'); } else { $this->session_id_ttl = (60*60*24*365*2); } } // check if session id needs regeneration if ( $this->_session_id_expired() ) { // regenerate session id (session data stays the // same, but old session storage is destroyed) $this->regenerate_id(); } // delete old flashdata (from last request) $this->_flashdata_sweep(); // mark all new flashdata as old (data will be deleted before next request) $this->_flashdata_mark(); } /** * Checks if session has expired */ function _session_id_expired() { if ( !isset( $_SESSION['regenerated'] ) ) { $_SESSION['regenerated'] = time(); return false; } $expiry_time = time() - $this->session_id_ttl; if ( $_SESSION['regenerated'] <= $expiry_time ) { return true; } return false; } /** * Sets "flash" data which will be available only in next request (then it will * be deleted from session). You can use it to implement "Save succeeded" messages * after redirect. */ function set_flashdata($key, $value) { $flash_key = $this->flash_key.':new:'.$key; $this->set_userdata($flash_key, $value); } /** * Keeps existing "flash" data available to next request. */ function keep_flashdata($key) { $old_flash_key = $this->flash_key.':old:'.$key; $value = $this->userdata($old_flash_key); $new_flash_key = $this->flash_key.':new:'.$key; $this->set_userdata($new_flash_key, $value); } /** * Returns "flash" data for the given key. */ function flashdata($key) { $flash_key = $this->flash_key.':old:'.$key; return $this->userdata($flash_key); } /** * PRIVATE: Internal method - marks "flash" session attributes as 'old' */ function _flashdata_mark() { foreach ($_SESSION as $name => $value) { $parts = explode(':new:', $name); if (is_array($parts) && count($parts) == 2) { $new_name = $this->flash_key.':old:'.$parts[1]; $this->set_userdata($new_name, $value); $this->unset_userdata($name); } } } /** * PRIVATE: Internal method - removes "flash" session marked as 'old' */ function _flashdata_sweep() { foreach ($_SESSION as $name => $value) { $parts = explode(':old:', $name); if (is_array($parts) && count($parts) == 2 && $parts[0] == $this->flash_key) { $this->unset_userdata($name); } } } } ?> с <?php if (!defined('BASEPATH')) exit('No direct script access allowed'); /** * Session class using native PHP session features and hardened against session fixation. * * @package CodeIgniter * @subpackage Libraries * @category Sessions * @author Dariusz Debowczyk * @link http://www.codeigniter.com/user_guide/libraries/sessions.html */ class CI_Session { var $flash_key = 'flash'; // prefix for "flash" variables (eg. flash:new:message) function CI_Session() { $this->object =& get_instance(); log_message('debug', "Native_session Class Initialized"); $this->_sess_run(); } /** * Regenerates session id */ function regenerate_id() { // copy old session data, including its id $old_session_id = session_id(); $old_session_data = $_SESSION; // regenerate session id and store it session_regenerate_id(); $new_session_id = session_id(); // switch to the old session and destroy its storage session_id($old_session_id); session_destroy(); // switch back to the new session id and send the cookie session_id($new_session_id); session_start(); // restore the old session data into the new session $_SESSION = $old_session_data; // update the session creation time $_SESSION['regenerated'] = time(); // session_write_close() patch based on this thread // http://www.codeigniter.com/forums/viewthread/1624/ // there is a question mark ?? as to side affects // end the current session and store session data. session_write_close(); } /** * Destroys the session and erases session storage */ function destroy() { unset($_SESSION); if ( isset( $_COOKIE[session_name()] ) ) { setcookie(session_name(), '', time()-42000, '/'); } session_destroy(); } /** * Reads given session attribute value */ function userdata($item) { if($item == 'session_id'){ //added for backward-compatibility return session_id(); }else{ return ( ! isset($_SESSION[$item])) ? false : $_SESSION[$item]; } } /** * Sets session attributes to the given values */ function set_userdata($newdata = array(), $newval = '') { if (is_string($newdata)) { $newdata = array($newdata => $newval); } if (count($newdata) > 0) { foreach ($newdata as $key => $val) { $_SESSION[$key] = $val; } } } /** * Erases given session attributes */ function unset_userdata($newdata = array()) { if (is_string($newdata)) { $newdata = array($newdata => ''); } if (count($newdata) > 0) { foreach ($newdata as $key => $val) { unset($_SESSION[$key]); } } } /** * Starts up the session system for current request */ function _sess_run() { session_start(); $session_id_ttl = $this->object->config->item('sess_expiration'); if (is_numeric($session_id_ttl)) { if ($session_id_ttl > 0) { $this->session_id_ttl = $this->object->config->item('sess_expiration'); } else { $this->session_id_ttl = (60*60*24*365*2); } } // check if session id needs regeneration if ( $this->_session_id_expired() ) { // regenerate session id (session data stays the // same, but old session storage is destroyed) $this->regenerate_id(); } // delete old flashdata (from last request) $this->_flashdata_sweep(); // mark all new flashdata as old (data will be deleted before next request) $this->_flashdata_mark(); } /** * Checks if session has expired */ function _session_id_expired() { if ( !isset( $_SESSION['regenerated'] ) ) { $_SESSION['regenerated'] = time(); return false; } $expiry_time = time() - $this->session_id_ttl; if ( $_SESSION['regenerated'] <= $expiry_time ) { return true; } return false; } /** * Sets "flash" data which will be available only in next request (then it will * be deleted from session). You can use it to implement "Save succeeded" messages * after redirect. */ function set_flashdata($key, $value) { $flash_key = $this->flash_key.':new:'.$key; $this->set_userdata($flash_key, $value); } /** * Keeps existing "flash" data available to next request. */ function keep_flashdata($key) { $old_flash_key = $this->flash_key.':old:'.$key; $value = $this->userdata($old_flash_key); $new_flash_key = $this->flash_key.':new:'.$key; $this->set_userdata($new_flash_key, $value); } /** * Returns "flash" data for the given key. */ function flashdata($key) { $flash_key = $this->flash_key.':old:'.$key; return $this->userdata($flash_key); } /** * PRIVATE: Internal method - marks "flash" session attributes as 'old' */ function _flashdata_mark() { foreach ($_SESSION as $name => $value) { $parts = explode(':new:', $name); if (is_array($parts) && count($parts) == 2) { $new_name = $this->flash_key.':old:'.$parts[1]; $this->set_userdata($new_name, $value); $this->unset_userdata($name); } } } /** * PRIVATE: Internal method - removes "flash" session marked as 'old' */ function _flashdata_sweep() { foreach ($_SESSION as $name => $value) { $parts = explode(':old:', $name); if (is_array($parts) && count($parts) == 2 && $parts[0] == $this->flash_key) { $this->unset_userdata($name); } } } } ?> с <?php if (!defined('BASEPATH')) exit('No direct script access allowed'); /** * Session class using native PHP session features and hardened against session fixation. * * @package CodeIgniter * @subpackage Libraries * @category Sessions * @author Dariusz Debowczyk * @link http://www.codeigniter.com/user_guide/libraries/sessions.html */ class CI_Session { var $flash_key = 'flash'; // prefix for "flash" variables (eg. flash:new:message) function CI_Session() { $this->object =& get_instance(); log_message('debug', "Native_session Class Initialized"); $this->_sess_run(); } /** * Regenerates session id */ function regenerate_id() { // copy old session data, including its id $old_session_id = session_id(); $old_session_data = $_SESSION; // regenerate session id and store it session_regenerate_id(); $new_session_id = session_id(); // switch to the old session and destroy its storage session_id($old_session_id); session_destroy(); // switch back to the new session id and send the cookie session_id($new_session_id); session_start(); // restore the old session data into the new session $_SESSION = $old_session_data; // update the session creation time $_SESSION['regenerated'] = time(); // session_write_close() patch based on this thread // http://www.codeigniter.com/forums/viewthread/1624/ // there is a question mark ?? as to side affects // end the current session and store session data. session_write_close(); } /** * Destroys the session and erases session storage */ function destroy() { unset($_SESSION); if ( isset( $_COOKIE[session_name()] ) ) { setcookie(session_name(), '', time()-42000, '/'); } session_destroy(); } /** * Reads given session attribute value */ function userdata($item) { if($item == 'session_id'){ //added for backward-compatibility return session_id(); }else{ return ( ! isset($_SESSION[$item])) ? false : $_SESSION[$item]; } } /** * Sets session attributes to the given values */ function set_userdata($newdata = array(), $newval = '') { if (is_string($newdata)) { $newdata = array($newdata => $newval); } if (count($newdata) > 0) { foreach ($newdata as $key => $val) { $_SESSION[$key] = $val; } } } /** * Erases given session attributes */ function unset_userdata($newdata = array()) { if (is_string($newdata)) { $newdata = array($newdata => ''); } if (count($newdata) > 0) { foreach ($newdata as $key => $val) { unset($_SESSION[$key]); } } } /** * Starts up the session system for current request */ function _sess_run() { session_start(); $session_id_ttl = $this->object->config->item('sess_expiration'); if (is_numeric($session_id_ttl)) { if ($session_id_ttl > 0) { $this->session_id_ttl = $this->object->config->item('sess_expiration'); } else { $this->session_id_ttl = (60*60*24*365*2); } } // check if session id needs regeneration if ( $this->_session_id_expired() ) { // regenerate session id (session data stays the // same, but old session storage is destroyed) $this->regenerate_id(); } // delete old flashdata (from last request) $this->_flashdata_sweep(); // mark all new flashdata as old (data will be deleted before next request) $this->_flashdata_mark(); } /** * Checks if session has expired */ function _session_id_expired() { if ( !isset( $_SESSION['regenerated'] ) ) { $_SESSION['regenerated'] = time(); return false; } $expiry_time = time() - $this->session_id_ttl; if ( $_SESSION['regenerated'] <= $expiry_time ) { return true; } return false; } /** * Sets "flash" data which will be available only in next request (then it will * be deleted from session). You can use it to implement "Save succeeded" messages * after redirect. */ function set_flashdata($key, $value) { $flash_key = $this->flash_key.':new:'.$key; $this->set_userdata($flash_key, $value); } /** * Keeps existing "flash" data available to next request. */ function keep_flashdata($key) { $old_flash_key = $this->flash_key.':old:'.$key; $value = $this->userdata($old_flash_key); $new_flash_key = $this->flash_key.':new:'.$key; $this->set_userdata($new_flash_key, $value); } /** * Returns "flash" data for the given key. */ function flashdata($key) { $flash_key = $this->flash_key.':old:'.$key; return $this->userdata($flash_key); } /** * PRIVATE: Internal method - marks "flash" session attributes as 'old' */ function _flashdata_mark() { foreach ($_SESSION as $name => $value) { $parts = explode(':new:', $name); if (is_array($parts) && count($parts) == 2) { $new_name = $this->flash_key.':old:'.$parts[1]; $this->set_userdata($new_name, $value); $this->unset_userdata($name); } } } /** * PRIVATE: Internal method - removes "flash" session marked as 'old' */ function _flashdata_sweep() { foreach ($_SESSION as $name => $value) { $parts = explode(':old:', $name); if (is_array($parts) && count($parts) == 2 && $parts[0] == $this->flash_key) { $this->unset_userdata($name); } } } } ?> 

3) Затем загрузите библиотеку,

 $this->load->library('session'); 

Я решил эту проблему, установив этот параметр в файле конфигурации:

 $config['cookie_domain']= '';