/var/www/vhosts/nabawater/vendor/yiisoft/yii2/web
Edit: /var/www/vhosts/nabawater/vendor/yiisoft/yii2/web/Session.php (34578B)
session`.
*
* To start the session, call [[open()]]; To complete and send out session data, call [[close()]];
* To destroy the session, call [[destroy()]].
*
* Session can be used like an array to set and get session data. For example,
*
* ```php
* $session = new Session;
* $session->open();
* $value1 = $session['name1']; // get session variable 'name1'
* $value2 = $session['name2']; // get session variable 'name2'
* foreach ($session as $name => $value) // traverse all session variables
* $session['name3'] = $value3; // set session variable 'name3'
* ```
*
* Session can be extended to support customized session storage.
* To do so, override [[useCustomStorage]] so that it returns true, and
* override these methods with the actual logic about using custom storage:
* [[openSession()]], [[closeSession()]], [[readSession()]], [[writeSession()]],
* [[destroySession()]] and [[gcSession()]].
*
* Session also supports a special type of session data, called *flash messages*.
* A flash message is available only in the current request and the next request.
* After that, it will be deleted automatically. Flash messages are particularly
* useful for displaying confirmation messages. To use flash messages, simply
* call methods such as [[setFlash()]], [[getFlash()]].
*
* For more details and usage information on Session, see the [guide article on sessions](guide:runtime-sessions-cookies).
*
* @property array $allFlashes Flash messages (key => message or key => [message1, message2]). This property
* is read-only.
* @property string $cacheLimiter Current cache limiter. This property is read-only.
* @property array $cookieParams The session cookie parameters. This property is read-only.
* @property int $count The number of session variables. This property is read-only.
* @property string $flash The key identifying the flash message. Note that flash messages and normal session
* variables share the same name space. If you have a normal session variable using the same name, its value will
* be overwritten by this method. This property is write-only.
* @property float $gCProbability The probability (percentage) that the GC (garbage collection) process is
* started on every session initialization, defaults to 1 meaning 1% chance.
* @property bool $hasSessionId Whether the current request has sent the session ID.
* @property string $id The current session ID.
* @property bool $isActive Whether the session has started. This property is read-only.
* @property SessionIterator $iterator An iterator for traversing the session variables. This property is
* read-only.
* @property string $name The current session name.
* @property string $savePath The current session save path, defaults to '/tmp'.
* @property int $timeout The number of seconds after which data will be seen as 'garbage' and cleaned up. The
* default value is 1440 seconds (or the value of "session.gc_maxlifetime" set in php.ini).
* @property bool|null $useCookies The value indicating whether cookies should be used to store session IDs.
* @property bool $useCustomStorage Whether to use custom storage. This property is read-only.
* @property bool $useTransparentSessionID Whether transparent sid support is enabled or not, defaults to
* false.
*
* @author Qiang Xue
* @since 2.0
*/
class Session extends Component implements \IteratorAggregate, \ArrayAccess, \Countable
{
/**
* @var string the name of the session variable that stores the flash message data.
*/
public $flashParam = '__flash';
/**
* @var \SessionHandlerInterface|array an object implementing the SessionHandlerInterface or a configuration array. If set, will be used to provide persistency instead of build-in methods.
*/
public $handler;
/**
* @var array parameter-value pairs to override default session cookie parameters that are used for session_set_cookie_params() function
* Array may have the following possible keys: 'lifetime', 'path', 'domain', 'secure', 'httponly'
* @see http://www.php.net/manual/en/function.session-set-cookie-params.php
*/
private $_cookieParams = ['httponly' => true];
/**
* @var $frozenSessionData array|null is used for saving session between recreations due to session parameters update.
*/
private $frozenSessionData;
/**
* Initializes the application component.
* This method is required by IApplicationComponent and is invoked by application.
*/
public function init()
{
parent::init();
register_shutdown_function([$this, 'close']);
if ($this->getIsActive()) {
Yii::warning('Session is already started', __METHOD__);
$this->updateFlashCounters();
}
}
/**
* Returns a value indicating whether to use custom session storage.
* This method should be overridden to return true by child classes that implement custom session storage.
* To implement custom session storage, override these methods: [[openSession()]], [[closeSession()]],
* [[readSession()]], [[writeSession()]], [[destroySession()]] and [[gcSession()]].
* @return bool whether to use custom storage.
*/
public function getUseCustomStorage()
{
return false;
}
/**
* Starts the session.
*/
public function open()
{
if ($this->getIsActive()) {
return;
}
$this->registerSessionHandler();
$this->setCookieParamsInternal();
YII_DEBUG ? session_start() : @session_start();
if ($this->getIsActive()) {
Yii::info('Session started', __METHOD__);
$this->updateFlashCounters();
} else {
$error = error_get_last();
$message = isset($error['message']) ? $error['message'] : 'Failed to start session.';
Yii::error($message, __METHOD__);
}
}
/**
* Registers session handler.
* @throws \yii\base\InvalidConfigException
*/
protected function registerSessionHandler()
{
if ($this->handler !== null) {
if (!is_object($this->handler)) {
$this->handler = Yii::createObject($this->handler);
}
if (!$this->handler instanceof \SessionHandlerInterface) {
throw new InvalidConfigException('"' . get_class($this) . '::handler" must implement the SessionHandlerInterface.');
}
YII_DEBUG ? session_set_save_handler($this->handler, false) : @session_set_save_handler($this->handler, false);
} elseif ($this->getUseCustomStorage()) {
if (YII_DEBUG) {
session_set_save_handler(
[$this, 'openSession'],
[$this, 'closeSession'],
[$this, 'readSession'],
[$this, 'writeSession'],
[$this, 'destroySession'],
[$this, 'gcSession']
);
} else {
@session_set_save_handler(
[$this, 'openSession'],
[$this, 'closeSession'],
[$this, 'readSession'],
[$this, 'writeSession'],
[$this, 'destroySession'],
[$this, 'gcSession']
);
}
}
}
/**
* Ends the current session and store session data.
*/
public function close()
{
if ($this->getIsActive()) {
YII_DEBUG ? session_write_close() : @session_write_close();
}
}
/**
* Frees all session variables and destroys all data registered to a session.
*
* This method has no effect when session is not [[getIsActive()|active]].
* Make sure to call [[open()]] before calling it.
* @see open()
* @see isActive
*/
public function destroy()
{
if ($this->getIsActive()) {
$sessionId = session_id();
$this->close();
$this->setId($sessionId);
$this->open();
session_unset();
session_destroy();
$this->setId($sessionId);
}
}
/**
* @return bool whether the session has started
*/
public function getIsActive()
{
return session_status() === PHP_SESSION_ACTIVE;
}
private $_hasSessionId;
/**
* Returns a value indicating whether the current request has sent the session ID.
* The default implementation will check cookie and $_GET using the session name.
* If you send session ID via other ways, you may need to override this method
* or call [[setHasSessionId()]] to explicitly set whether the session ID is sent.
* @return bool whether the current request has sent the session ID.
*/
public function getHasSessionId()
{
if ($this->_hasSessionId === null) {
$name = $this->getName();
$request = Yii::$app->getRequest();
if (!empty($_COOKIE[$name]) && ini_get('session.use_cookies')) {
$this->_hasSessionId = true;
} elseif (!ini_get('session.use_only_cookies') && ini_get('session.use_trans_sid')) {
$this->_hasSessionId = $request->get($name) != '';
} else {
$this->_hasSessionId = false;
}
}
return $this->_hasSessionId;
}
/**
* Sets the value indicating whether the current request has sent the session ID.
* This method is provided so that you can override the default way of determining
* whether the session ID is sent.
* @param bool $value whether the current request has sent the session ID.
*/
public function setHasSessionId($value)
{
$this->_hasSessionId = $value;
}
/**
* Gets the session ID.
* This is a wrapper for [PHP session_id()](http://php.net/manual/en/function.session-id.php).
* @return string the current session ID
*/
public function getId()
{
return session_id();
}
/**
* Sets the session ID.
* This is a wrapper for [PHP session_id()](http://php.net/manual/en/function.session-id.php).
* @param string $value the session ID for the current session
*/
public function setId($value)
{
session_id($value);
}
/**
* Updates the current session ID with a newly generated one.
*
* Please refer to for more details.
*
* This method has no effect when session is not [[getIsActive()|active]].
* Make sure to call [[open()]] before calling it.
*
* @param bool $deleteOldSession Whether to delete the old associated session file or not.
* @see open()
* @see isActive
*/
public function regenerateID($deleteOldSession = false)
{
if ($this->getIsActive()) {
// add @ to inhibit possible warning due to race condition
// https://github.com/yiisoft/yii2/pull/1812
if (YII_DEBUG && !headers_sent()) {
session_regenerate_id($deleteOldSession);
} else {
@session_regenerate_id($deleteOldSession);
}
}
}
/**
* Gets the name of the current session.
* This is a wrapper for [PHP session_name()](http://php.net/manual/en/function.session-name.php).
* @return string the current session name
*/
public function getName()
{
return session_name();
}
/**
* Sets the name for the current session.
* This is a wrapper for [PHP session_name()](http://php.net/manual/en/function.session-name.php).
* @param string $value the session name for the current session, must be an alphanumeric string.
* It defaults to "PHPSESSID".
*/
public function setName($value)
{
$this->freeze();
session_name($value);
$this->unfreeze();
}
/**
* Gets the current session save path.
* This is a wrapper for [PHP session_save_path()](http://php.net/manual/en/function.session-save-path.php).
* @return string the current session save path, defaults to '/tmp'.
*/
public function getSavePath()
{
return session_save_path();
}
/**
* Sets the current session save path.
* This is a wrapper for [PHP session_save_path()](http://php.net/manual/en/function.session-save-path.php).
* @param string $value the current session save path. This can be either a directory name or a [path alias](guide:concept-aliases).
* @throws InvalidArgumentException if the path is not a valid directory
*/
public function setSavePath($value)
{
$path = Yii::getAlias($value);
if (is_dir($path)) {
session_save_path($path);
} else {
throw new InvalidArgumentException("Session save path is not a valid directory: $value");
}
}
/**
* @return array the session cookie parameters.
* @see http://php.net/manual/en/function.session-get-cookie-params.php
*/
public function getCookieParams()
{
return array_merge(session_get_cookie_params(), array_change_key_case($this->_cookieParams));
}
/**
* Sets the session cookie parameters.
* The cookie parameters passed to this method will be merged with the result
* of `session_get_cookie_params()`.
* @param array $value cookie parameters, valid keys include: `lifetime`, `path`, `domain`, `secure` and `httponly`.
* @throws InvalidArgumentException if the parameters are incomplete.
* @see http://us2.php.net/manual/en/function.session-set-cookie-params.php
*/
public function setCookieParams(array $value)
{
$this->_cookieParams = $value;
}
/**
* Sets the session cookie parameters.
* This method is called by [[open()]] when it is about to open the session.
* @throws InvalidArgumentException if the parameters are incomplete.
* @see http://us2.php.net/manual/en/function.session-set-cookie-params.php
*/
private function setCookieParamsInternal()
{
$data = $this->getCookieParams();
if (isset($data['lifetime'], $data['path'], $data['domain'], $data['secure'], $data['httponly'])) {
session_set_cookie_params($data['lifetime'], $data['path'], $data['domain'], $data['secure'], $data['httponly']);
} else {
throw new InvalidArgumentException('Please make sure cookieParams contains these elements: lifetime, path, domain, secure and httponly.');
}
}
/**
* Returns the value indicating whether cookies should be used to store session IDs.
* @return bool|null the value indicating whether cookies should be used to store session IDs.
* @see setUseCookies()
*/
public function getUseCookies()
{
if (ini_get('session.use_cookies') === '0') {
return false;
} elseif (ini_get('session.use_only_cookies') === '1') {
return true;
}
return null;
}
/**
* Sets the value indicating whether cookies should be used to store session IDs.
*
* Three states are possible:
*
* - true: cookies and only cookies will be used to store session IDs.
* - false: cookies will not be used to store session IDs.
* - null: if possible, cookies will be used to store session IDs; if not, other mechanisms will be used (e.g. GET parameter)
*
* @param bool|null $value the value indicating whether cookies should be used to store session IDs.
*/
public function setUseCookies($value)
{
$this->freeze();
if ($value === false) {
ini_set('session.use_cookies', '0');
ini_set('session.use_only_cookies', '0');
} elseif ($value === true) {
ini_set('session.use_cookies', '1');
ini_set('session.use_only_cookies', '1');
} else {
ini_set('session.use_cookies', '1');
ini_set('session.use_only_cookies', '0');
}
$this->unfreeze();
}
/**
* @return float the probability (percentage) that the GC (garbage collection) process is started on every session initialization, defaults to 1 meaning 1% chance.
*/
public function getGCProbability()
{
return (float) (ini_get('session.gc_probability') / ini_get('session.gc_divisor') * 100);
}
/**
* @param float $value the probability (percentage) that the GC (garbage collection) process is started on every session initialization.
* @throws InvalidArgumentException if the value is not between 0 and 100.
*/
public function setGCProbability($value)
{
$this->freeze();
if ($value >= 0 && $value <= 100) {
// percent * 21474837 / 2147483647 ≈ percent * 0.01
ini_set('session.gc_probability', floor($value * 21474836.47));
ini_set('session.gc_divisor', 2147483647);
} else {
throw new InvalidArgumentException('GCProbability must be a value between 0 and 100.');
}
$this->unfreeze();
}
/**
* @return bool whether transparent sid support is enabled or not, defaults to false.
*/
public function getUseTransparentSessionID()
{
return ini_get('session.use_trans_sid') == 1;
}
/**
* @param bool $value whether transparent sid support is enabled or not.
*/
public function setUseTransparentSessionID($value)
{
$this->freeze();
ini_set('session.use_trans_sid', $value ? '1' : '0');
$this->unfreeze();
}
/**
* @return int the number of seconds after which data will be seen as 'garbage' and cleaned up.
* The default value is 1440 seconds (or the value of "session.gc_maxlifetime" set in php.ini).
*/
public function getTimeout()
{
return (int) ini_get('session.gc_maxlifetime');
}
/**
* @param int $value the number of seconds after which data will be seen as 'garbage' and cleaned up
*/
public function setTimeout($value)
{
$this->freeze();
ini_set('session.gc_maxlifetime', $value);
$this->unfreeze();
}
/**
* Session open handler.
* This method should be overridden if [[useCustomStorage]] returns true.
* @internal Do not call this method directly.
* @param string $savePath session save path
* @param string $sessionName session name
* @return bool whether session is opened successfully
*/
public function openSession($savePath, $sessionName)
{
return true;
}
/**
* Session close handler.
* This method should be overridden if [[useCustomStorage]] returns true.
* @internal Do not call this method directly.
* @return bool whether session is closed successfully
*/
public function closeSession()
{
return true;
}
/**
* Session read handler.
* This method should be overridden if [[useCustomStorage]] returns true.
* @internal Do not call this method directly.
* @param string $id session ID
* @return string the session data
*/
public function readSession($id)
{
return '';
}
/**
* Session write handler.
* This method should be overridden if [[useCustomStorage]] returns true.
* @internal Do not call this method directly.
* @param string $id session ID
* @param string $data session data
* @return bool whether session write is successful
*/
public function writeSession($id, $data)
{
return true;
}
/**
* Session destroy handler.
* This method should be overridden if [[useCustomStorage]] returns true.
* @internal Do not call this method directly.
* @param string $id session ID
* @return bool whether session is destroyed successfully
*/
public function destroySession($id)
{
return true;
}
/**
* Session GC (garbage collection) handler.
* This method should be overridden if [[useCustomStorage]] returns true.
* @internal Do not call this method directly.
* @param int $maxLifetime the number of seconds after which data will be seen as 'garbage' and cleaned up.
* @return bool whether session is GCed successfully
*/
public function gcSession($maxLifetime)
{
return true;
}
/**
* Returns an iterator for traversing the session variables.
* This method is required by the interface [[\IteratorAggregate]].
* @return SessionIterator an iterator for traversing the session variables.
*/
public function getIterator()
{
$this->open();
return new SessionIterator();
}
/**
* Returns the number of items in the session.
* @return int the number of session variables
*/
public function getCount()
{
$this->open();
return count($_SESSION);
}
/**
* Returns the number of items in the session.
* This method is required by [[\Countable]] interface.
* @return int number of items in the session.
*/
public function count()
{
return $this->getCount();
}
/**
* Returns the session variable value with the session variable name.
* If the session variable does not exist, the `$defaultValue` will be returned.
* @param string $key the session variable name
* @param mixed $defaultValue the default value to be returned when the session variable does not exist.
* @return mixed the session variable value, or $defaultValue if the session variable does not exist.
*/
public function get($key, $defaultValue = null)
{
$this->open();
return isset($_SESSION[$key]) ? $_SESSION[$key] : $defaultValue;
}
/**
* Adds a session variable.
* If the specified name already exists, the old value will be overwritten.
* @param string $key session variable name
* @param mixed $value session variable value
*/
public function set($key, $value)
{
$this->open();
$_SESSION[$key] = $value;
}
/**
* Removes a session variable.
* @param string $key the name of the session variable to be removed
* @return mixed the removed value, null if no such session variable.
*/
public function remove($key)
{
$this->open();
if (isset($_SESSION[$key])) {
$value = $_SESSION[$key];
unset($_SESSION[$key]);
return $value;
}
return null;
}
/**
* Removes all session variables.
*/
public function removeAll()
{
$this->open();
foreach (array_keys($_SESSION) as $key) {
unset($_SESSION[$key]);
}
}
/**
* @param mixed $key session variable name
* @return bool whether there is the named session variable
*/
public function has($key)
{
$this->open();
return isset($_SESSION[$key]);
}
/**
* Updates the counters for flash messages and removes outdated flash messages.
* This method should only be called once in [[init()]].
*/
protected function updateFlashCounters()
{
$counters = $this->get($this->flashParam, []);
if (is_array($counters)) {
foreach ($counters as $key => $count) {
if ($count > 0) {
unset($counters[$key], $_SESSION[$key]);
} elseif ($count == 0) {
$counters[$key]++;
}
}
$_SESSION[$this->flashParam] = $counters;
} else {
// fix the unexpected problem that flashParam doesn't return an array
unset($_SESSION[$this->flashParam]);
}
}
/**
* Returns a flash message.
* @param string $key the key identifying the flash message
* @param mixed $defaultValue value to be returned if the flash message does not exist.
* @param bool $delete whether to delete this flash message right after this method is called.
* If false, the flash message will be automatically deleted in the next request.
* @return mixed the flash message or an array of messages if addFlash was used
* @see setFlash()
* @see addFlash()
* @see hasFlash()
* @see getAllFlashes()
* @see removeFlash()
*/
public function getFlash($key, $defaultValue = null, $delete = false)
{
$counters = $this->get($this->flashParam, []);
if (isset($counters[$key])) {
$value = $this->get($key, $defaultValue);
if ($delete) {
$this->removeFlash($key);
} elseif ($counters[$key] < 0) {
// mark for deletion in the next request
$counters[$key] = 1;
$_SESSION[$this->flashParam] = $counters;
}
return $value;
}
return $defaultValue;
}
/**
* Returns all flash messages.
*
* You may use this method to display all the flash messages in a view file:
*
* ```php
* session->getAllFlashes() as $key => $message) {
* echo '' . $message . '
';
* } ?>
* ```
*
* With the above code you can use the [bootstrap alert][] classes such as `success`, `info`, `danger`
* as the flash message key to influence the color of the div.
*
* Note that if you use [[addFlash()]], `$message` will be an array, and you will have to adjust the above code.
*
* [bootstrap alert]: http://getbootstrap.com/components/#alerts
*
* @param bool $delete whether to delete the flash messages right after this method is called.
* If false, the flash messages will be automatically deleted in the next request.
* @return array flash messages (key => message or key => [message1, message2]).
* @see setFlash()
* @see addFlash()
* @see getFlash()
* @see hasFlash()
* @see removeFlash()
*/
public function getAllFlashes($delete = false)
{
$counters = $this->get($this->flashParam, []);
$flashes = [];
foreach (array_keys($counters) as $key) {
if (array_key_exists($key, $_SESSION)) {
$flashes[$key] = $_SESSION[$key];
if ($delete) {
unset($counters[$key], $_SESSION[$key]);
} elseif ($counters[$key] < 0) {
// mark for deletion in the next request
$counters[$key] = 1;
}
} else {
unset($counters[$key]);
}
}
$_SESSION[$this->flashParam] = $counters;
return $flashes;
}
/**
* Sets a flash message.
* A flash message will be automatically deleted after it is accessed in a request and the deletion will happen
* in the next request.
* If there is already an existing flash message with the same key, it will be overwritten by the new one.
* @param string $key the key identifying the flash message. Note that flash messages
* and normal session variables share the same name space. If you have a normal
* session variable using the same name, its value will be overwritten by this method.
* @param mixed $value flash message
* @param bool $removeAfterAccess whether the flash message should be automatically removed only if
* it is accessed. If false, the flash message will be automatically removed after the next request,
* regardless if it is accessed or not. If true (default value), the flash message will remain until after
* it is accessed.
* @see getFlash()
* @see addFlash()
* @see removeFlash()
*/
public function setFlash($key, $value = true, $removeAfterAccess = true)
{
$counters = $this->get($this->flashParam, []);
$counters[$key] = $removeAfterAccess ? -1 : 0;
$_SESSION[$key] = $value;
$_SESSION[$this->flashParam] = $counters;
}
/**
* Adds a flash message.
* If there are existing flash messages with the same key, the new one will be appended to the existing message array.
* @param string $key the key identifying the flash message.
* @param mixed $value flash message
* @param bool $removeAfterAccess whether the flash message should be automatically removed only if
* it is accessed. If false, the flash message will be automatically removed after the next request,
* regardless if it is accessed or not. If true (default value), the flash message will remain until after
* it is accessed.
* @see getFlash()
* @see setFlash()
* @see removeFlash()
*/
public function addFlash($key, $value = true, $removeAfterAccess = true)
{
$counters = $this->get($this->flashParam, []);
$counters[$key] = $removeAfterAccess ? -1 : 0;
$_SESSION[$this->flashParam] = $counters;
if (empty($_SESSION[$key])) {
$_SESSION[$key] = [$value];
} elseif (is_array($_SESSION[$key])) {
$_SESSION[$key][] = $value;
} else {
$_SESSION[$key] = [$_SESSION[$key], $value];
}
}
/**
* Removes a flash message.
* @param string $key the key identifying the flash message. Note that flash messages
* and normal session variables share the same name space. If you have a normal
* session variable using the same name, it will be removed by this method.
* @return mixed the removed flash message. Null if the flash message does not exist.
* @see getFlash()
* @see setFlash()
* @see addFlash()
* @see removeAllFlashes()
*/
public function removeFlash($key)
{
$counters = $this->get($this->flashParam, []);
$value = isset($_SESSION[$key], $counters[$key]) ? $_SESSION[$key] : null;
unset($counters[$key], $_SESSION[$key]);
$_SESSION[$this->flashParam] = $counters;
return $value;
}
/**
* Removes all flash messages.
* Note that flash messages and normal session variables share the same name space.
* If you have a normal session variable using the same name, it will be removed
* by this method.
* @see getFlash()
* @see setFlash()
* @see addFlash()
* @see removeFlash()
*/
public function removeAllFlashes()
{
$counters = $this->get($this->flashParam, []);
foreach (array_keys($counters) as $key) {
unset($_SESSION[$key]);
}
unset($_SESSION[$this->flashParam]);
}
/**
* Returns a value indicating whether there are flash messages associated with the specified key.
* @param string $key key identifying the flash message type
* @return bool whether any flash messages exist under specified key
*/
public function hasFlash($key)
{
return $this->getFlash($key) !== null;
}
/**
* This method is required by the interface [[\ArrayAccess]].
* @param mixed $offset the offset to check on
* @return bool
*/
public function offsetExists($offset)
{
$this->open();
return isset($_SESSION[$offset]);
}
/**
* This method is required by the interface [[\ArrayAccess]].
* @param int $offset the offset to retrieve element.
* @return mixed the element at the offset, null if no element is found at the offset
*/
public function offsetGet($offset)
{
$this->open();
return isset($_SESSION[$offset]) ? $_SESSION[$offset] : null;
}
/**
* This method is required by the interface [[\ArrayAccess]].
* @param int $offset the offset to set element
* @param mixed $item the element value
*/
public function offsetSet($offset, $item)
{
$this->open();
$_SESSION[$offset] = $item;
}
/**
* This method is required by the interface [[\ArrayAccess]].
* @param mixed $offset the offset to unset element
*/
public function offsetUnset($offset)
{
$this->open();
unset($_SESSION[$offset]);
}
/**
* If session is started it's not possible to edit session ini settings. In PHP7.2+ it throws exception.
* This function saves session data to temporary variable and stop session.
* @since 2.0.14
*/
protected function freeze()
{
if ($this->getIsActive()) {
if (isset($_SESSION)) {
$this->frozenSessionData = $_SESSION;
}
$this->close();
Yii::info('Session frozen', __METHOD__);
}
}
/**
* Starts session and restores data from temporary variable
* @since 2.0.14
*/
protected function unfreeze()
{
if (null !== $this->frozenSessionData) {
YII_DEBUG ? session_start() : @session_start();
if ($this->getIsActive()) {
Yii::info('Session unfrozen', __METHOD__);
} else {
$error = error_get_last();
$message = isset($error['message']) ? $error['message'] : 'Failed to unfreeze session.';
Yii::error($message, __METHOD__);
}
$_SESSION = $this->frozenSessionData;
$this->frozenSessionData = null;
}
}
/**
* Set cache limiter
*
* @param string $cacheLimiter
* @since 2.0.14
*/
public function setCacheLimiter($cacheLimiter)
{
$this->freeze();
session_cache_limiter($cacheLimiter);
$this->unfreeze();
}
/**
* Returns current cache limiter
*
* @return string current cache limiter
* @since 2.0.14
*/
public function getCacheLimiter()
{
return session_cache_limiter();
}
}