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AbstractSessionHandler.php (4.36 KB)

IdentityMarshaller.php (899 B)

MemcachedSessionHandler.php (3.16 KB)

MigratingSessionHandler.php (3.24 KB)

SessionHandlerFactory.php (4.25 KB)

StrictSessionHandler.php (2.41 KB)

Edit: MemcachedSessionHandler.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;

/**
 * Memcached based session storage handler based on the Memcached class
 * provided by the PHP memcached extension.
 *
 * @see https://php.net/memcached
 *
 * @author Drak <drak@zikula.org>
 */
class MemcachedSessionHandler extends AbstractSessionHandler
{
    /**
     * Time to live in seconds.
     */
    private int|\Closure|null $ttl;

/**
     * Key prefix for shared environments.
     */
    private string $prefix;

/**
     * Constructor.
     *
     * List of available options:
     *  * prefix: The prefix to use for the memcached keys in order to avoid collision
     *  * ttl: The time to live in seconds.
     *
     * @throws \InvalidArgumentException When unsupported options are passed
     */
    public function __construct(
        private \Memcached $memcached,
        array $options = [],
    ) {
        if ($diff = array_diff(array_keys($options), ['prefix', 'expiretime', 'ttl'])) {
            throw new \InvalidArgumentException(\sprintf('The following options are not supported "%s".', implode(', ', $diff)));
        }

$this->ttl = $options['expiretime'] ?? $options['ttl'] ?? null;
        $this->prefix = $options['prefix'] ?? 'sf2s';
    }

public function close(): bool
    {
        return $this->memcached->quit();
    }

protected function doRead(#[\SensitiveParameter] string $sessionId): string
    {
        return $this->memcached->get($this->prefix.$sessionId) ?: '';
    }

public function updateTimestamp(#[\SensitiveParameter] string $sessionId, string $data): bool
    {
        $this->memcached->touch($this->prefix.$sessionId, $this->getCompatibleTtl());

return true;
    }

protected function doWrite(#[\SensitiveParameter] string $sessionId, string $data): bool
    {
        return $this->memcached->set($this->prefix.$sessionId, $data, $this->getCompatibleTtl());
    }

private function getCompatibleTtl(): int
    {
        $ttl = ($this->ttl instanceof \Closure ? ($this->ttl)() : $this->ttl) ?? \ini_get('session.gc_maxlifetime');

// If the relative TTL that is used exceeds 30 days, memcached will treat the value as Unix time.
        // We have to convert it to an absolute Unix time at this point, to make sure the TTL is correct.
        if ($ttl > 60 * 60 * 24 * 30) {
            $ttl += time();
        }

return $ttl;
    }

protected function doDestroy(#[\SensitiveParameter] string $sessionId): bool
    {
        $result = $this->memcached->delete($this->prefix.$sessionId);

return $result || \Memcached::RES_NOTFOUND == $this->memcached->getResultCode();
    }

public function gc(int $maxlifetime): int|false
    {
        // not required here because memcached will auto expire the records anyhow.
        return 0;
    }

/**
     * Return a Memcached instance.
     */
    protected function getMemcached(): \Memcached
    {
        return $this->memcached;
    }
}