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470
vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php
vendored
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470
vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpFoundation\Session\Storage;
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use Symfony\Component\HttpFoundation\Session\SessionBagInterface;
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use Symfony\Component\HttpFoundation\Session\SessionUtils;
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use Symfony\Component\HttpFoundation\Session\Storage\Handler\StrictSessionHandler;
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use Symfony\Component\HttpFoundation\Session\Storage\Proxy\AbstractProxy;
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use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;
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// Help opcache.preload discover always-needed symbols
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class_exists(MetadataBag::class);
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class_exists(StrictSessionHandler::class);
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class_exists(SessionHandlerProxy::class);
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/**
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* This provides a base class for session attribute storage.
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*
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* @author Drak <drak@zikula.org>
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*/
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class NativeSessionStorage implements SessionStorageInterface
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{
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/**
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* @var SessionBagInterface[]
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*/
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protected $bags = [];
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/**
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* @var bool
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*/
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protected $started = false;
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/**
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* @var bool
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*/
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protected $closed = false;
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/**
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* @var AbstractProxy|\SessionHandlerInterface
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*/
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protected $saveHandler;
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/**
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* @var MetadataBag
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*/
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protected $metadataBag;
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/**
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* @var string|null
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*/
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private $emulateSameSite;
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/**
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* Depending on how you want the storage driver to behave you probably
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* want to override this constructor entirely.
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*
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* List of options for $options array with their defaults.
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*
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* @see https://php.net/session.configuration for options
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* but we omit 'session.' from the beginning of the keys for convenience.
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*
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* ("auto_start", is not supported as it tells PHP to start a session before
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* PHP starts to execute user-land code. Setting during runtime has no effect).
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*
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* cache_limiter, "" (use "0" to prevent headers from being sent entirely).
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* cache_expire, "0"
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* cookie_domain, ""
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* cookie_httponly, ""
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* cookie_lifetime, "0"
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* cookie_path, "/"
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* cookie_secure, ""
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* cookie_samesite, null
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* gc_divisor, "100"
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* gc_maxlifetime, "1440"
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* gc_probability, "1"
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* lazy_write, "1"
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* name, "PHPSESSID"
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* referer_check, ""
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* serialize_handler, "php"
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* use_strict_mode, "1"
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* use_cookies, "1"
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* use_only_cookies, "1"
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* use_trans_sid, "0"
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* sid_length, "32"
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* sid_bits_per_character, "5"
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* trans_sid_hosts, $_SERVER['HTTP_HOST']
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* trans_sid_tags, "a=href,area=href,frame=src,form="
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*
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* @param AbstractProxy|\SessionHandlerInterface|null $handler
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*/
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public function __construct(array $options = [], $handler = null, MetadataBag $metaBag = null)
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{
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if (!\extension_loaded('session')) {
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throw new \LogicException('PHP extension "session" is required.');
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}
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$options += [
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'cache_limiter' => '',
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'cache_expire' => 0,
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'use_cookies' => 1,
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'lazy_write' => 1,
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'use_strict_mode' => 1,
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];
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session_register_shutdown();
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$this->setMetadataBag($metaBag);
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$this->setOptions($options);
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$this->setSaveHandler($handler);
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}
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/**
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* Gets the save handler instance.
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*
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* @return AbstractProxy|\SessionHandlerInterface
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*/
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public function getSaveHandler()
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{
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return $this->saveHandler;
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}
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/**
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* {@inheritdoc}
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*/
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public function start()
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{
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if ($this->started) {
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return true;
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}
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if (\PHP_SESSION_ACTIVE === session_status()) {
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throw new \RuntimeException('Failed to start the session: already started by PHP.');
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}
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if (filter_var(ini_get('session.use_cookies'), \FILTER_VALIDATE_BOOLEAN) && headers_sent($file, $line)) {
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throw new \RuntimeException(sprintf('Failed to start the session because headers have already been sent by "%s" at line %d.', $file, $line));
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}
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// ok to try and start the session
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if (!session_start()) {
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throw new \RuntimeException('Failed to start the session.');
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}
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if (null !== $this->emulateSameSite) {
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$originalCookie = SessionUtils::popSessionCookie(session_name(), session_id());
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if (null !== $originalCookie) {
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header(sprintf('%s; SameSite=%s', $originalCookie, $this->emulateSameSite), false);
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}
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}
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$this->loadSession();
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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public function getId()
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{
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return $this->saveHandler->getId();
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}
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/**
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* {@inheritdoc}
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*/
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public function setId(string $id)
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{
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$this->saveHandler->setId($id);
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}
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/**
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* {@inheritdoc}
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*/
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public function getName()
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{
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return $this->saveHandler->getName();
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}
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/**
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* {@inheritdoc}
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*/
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public function setName(string $name)
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{
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$this->saveHandler->setName($name);
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}
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/**
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* {@inheritdoc}
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*/
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public function regenerate(bool $destroy = false, int $lifetime = null)
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{
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// Cannot regenerate the session ID for non-active sessions.
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if (\PHP_SESSION_ACTIVE !== session_status()) {
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return false;
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}
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if (headers_sent()) {
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return false;
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}
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if (null !== $lifetime && $lifetime != ini_get('session.cookie_lifetime')) {
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$this->save();
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ini_set('session.cookie_lifetime', $lifetime);
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$this->start();
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}
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if ($destroy) {
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$this->metadataBag->stampNew();
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}
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$isRegenerated = session_regenerate_id($destroy);
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if (null !== $this->emulateSameSite) {
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$originalCookie = SessionUtils::popSessionCookie(session_name(), session_id());
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if (null !== $originalCookie) {
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header(sprintf('%s; SameSite=%s', $originalCookie, $this->emulateSameSite), false);
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}
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}
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return $isRegenerated;
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}
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/**
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* {@inheritdoc}
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*/
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public function save()
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{
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// Store a copy so we can restore the bags in case the session was not left empty
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$session = $_SESSION;
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foreach ($this->bags as $bag) {
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if (empty($_SESSION[$key = $bag->getStorageKey()])) {
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unset($_SESSION[$key]);
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}
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}
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if ([$key = $this->metadataBag->getStorageKey()] === array_keys($_SESSION)) {
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unset($_SESSION[$key]);
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}
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// Register error handler to add information about the current save handler
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$previousHandler = set_error_handler(function ($type, $msg, $file, $line) use (&$previousHandler) {
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if (\E_WARNING === $type && str_starts_with($msg, 'session_write_close():')) {
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$handler = $this->saveHandler instanceof SessionHandlerProxy ? $this->saveHandler->getHandler() : $this->saveHandler;
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$msg = sprintf('session_write_close(): Failed to write session data with "%s" handler', \get_class($handler));
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}
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return $previousHandler ? $previousHandler($type, $msg, $file, $line) : false;
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});
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try {
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session_write_close();
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} finally {
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restore_error_handler();
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// Restore only if not empty
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if ($_SESSION) {
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$_SESSION = $session;
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}
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}
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$this->closed = true;
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$this->started = false;
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}
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/**
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* {@inheritdoc}
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*/
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public function clear()
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{
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// clear out the bags
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foreach ($this->bags as $bag) {
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$bag->clear();
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}
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// clear out the session
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$_SESSION = [];
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// reconnect the bags to the session
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$this->loadSession();
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}
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/**
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* {@inheritdoc}
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*/
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public function registerBag(SessionBagInterface $bag)
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{
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if ($this->started) {
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throw new \LogicException('Cannot register a bag when the session is already started.');
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}
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$this->bags[$bag->getName()] = $bag;
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}
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/**
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* {@inheritdoc}
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*/
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public function getBag(string $name)
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{
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if (!isset($this->bags[$name])) {
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throw new \InvalidArgumentException(sprintf('The SessionBagInterface "%s" is not registered.', $name));
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}
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if (!$this->started && $this->saveHandler->isActive()) {
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$this->loadSession();
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} elseif (!$this->started) {
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$this->start();
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}
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return $this->bags[$name];
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}
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public function setMetadataBag(MetadataBag $metaBag = null)
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{
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if (null === $metaBag) {
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$metaBag = new MetadataBag();
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}
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$this->metadataBag = $metaBag;
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}
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/**
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* Gets the MetadataBag.
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*
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* @return MetadataBag
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*/
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public function getMetadataBag()
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{
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return $this->metadataBag;
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}
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/**
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* {@inheritdoc}
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*/
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public function isStarted()
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{
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return $this->started;
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}
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/**
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* Sets session.* ini variables.
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*
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* For convenience we omit 'session.' from the beginning of the keys.
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* Explicitly ignores other ini keys.
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*
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* @param array $options Session ini directives [key => value]
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*
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* @see https://php.net/session.configuration
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*/
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public function setOptions(array $options)
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{
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if (headers_sent() || \PHP_SESSION_ACTIVE === session_status()) {
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return;
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}
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$validOptions = array_flip([
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'cache_expire', 'cache_limiter', 'cookie_domain', 'cookie_httponly',
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'cookie_lifetime', 'cookie_path', 'cookie_secure', 'cookie_samesite',
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'gc_divisor', 'gc_maxlifetime', 'gc_probability',
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'lazy_write', 'name', 'referer_check',
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'serialize_handler', 'use_strict_mode', 'use_cookies',
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'use_only_cookies', 'use_trans_sid', 'upload_progress.enabled',
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'upload_progress.cleanup', 'upload_progress.prefix', 'upload_progress.name',
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'upload_progress.freq', 'upload_progress.min_freq', 'url_rewriter.tags',
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'sid_length', 'sid_bits_per_character', 'trans_sid_hosts', 'trans_sid_tags',
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]);
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foreach ($options as $key => $value) {
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if (isset($validOptions[$key])) {
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if (str_starts_with($key, 'upload_progress.')) {
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trigger_deprecation('symfony/http-foundation', '5.4', 'Support for the "%s" session option is deprecated. The settings prefixed with "session.upload_progress." can not be changed at runtime.', $key);
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continue;
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}
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if ('url_rewriter.tags' === $key) {
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trigger_deprecation('symfony/http-foundation', '5.4', 'Support for the "%s" session option is deprecated. Use "trans_sid_tags" instead.', $key);
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}
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if ('cookie_samesite' === $key && \PHP_VERSION_ID < 70300) {
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// PHP < 7.3 does not support same_site cookies. We will emulate it in
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// the start() method instead.
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$this->emulateSameSite = $value;
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continue;
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}
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if ('cookie_secure' === $key && 'auto' === $value) {
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continue;
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}
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ini_set('url_rewriter.tags' !== $key ? 'session.'.$key : $key, $value);
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}
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}
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}
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/**
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* Registers session save handler as a PHP session handler.
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*
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* To use internal PHP session save handlers, override this method using ini_set with
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* session.save_handler and session.save_path e.g.
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*
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* ini_set('session.save_handler', 'files');
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* ini_set('session.save_path', '/tmp');
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*
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* or pass in a \SessionHandler instance which configures session.save_handler in the
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* constructor, for a template see NativeFileSessionHandler.
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*
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* @see https://php.net/session-set-save-handler
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* @see https://php.net/sessionhandlerinterface
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* @see https://php.net/sessionhandler
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*
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* @param AbstractProxy|\SessionHandlerInterface|null $saveHandler
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*
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* @throws \InvalidArgumentException
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*/
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public function setSaveHandler($saveHandler = null)
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{
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if (!$saveHandler instanceof AbstractProxy &&
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!$saveHandler instanceof \SessionHandlerInterface &&
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null !== $saveHandler) {
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throw new \InvalidArgumentException('Must be instance of AbstractProxy; implement \SessionHandlerInterface; or be null.');
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}
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// Wrap $saveHandler in proxy and prevent double wrapping of proxy
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if (!$saveHandler instanceof AbstractProxy && $saveHandler instanceof \SessionHandlerInterface) {
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$saveHandler = new SessionHandlerProxy($saveHandler);
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} elseif (!$saveHandler instanceof AbstractProxy) {
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$saveHandler = new SessionHandlerProxy(new StrictSessionHandler(new \SessionHandler()));
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}
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$this->saveHandler = $saveHandler;
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if (headers_sent() || \PHP_SESSION_ACTIVE === session_status()) {
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return;
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}
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if ($this->saveHandler instanceof SessionHandlerProxy) {
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session_set_save_handler($this->saveHandler, false);
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}
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}
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/**
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* Load the session with attributes.
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*
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* After starting the session, PHP retrieves the session from whatever handlers
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* are set to (either PHP's internal, or a custom save handler set with session_set_save_handler()).
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* PHP takes the return value from the read() handler, unserializes it
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* and populates $_SESSION with the result automatically.
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*/
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protected function loadSession(array &$session = null)
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{
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if (null === $session) {
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$session = &$_SESSION;
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}
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$bags = array_merge($this->bags, [$this->metadataBag]);
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foreach ($bags as $bag) {
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$key = $bag->getStorageKey();
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$session[$key] = isset($session[$key]) && \is_array($session[$key]) ? $session[$key] : [];
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$bag->initialize($session[$key]);
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}
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$this->started = true;
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$this->closed = false;
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}
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}
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