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modules/ps_facebook/vendor/symfony/cache/Traits/AbstractTrait.php

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+<?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\Cache\Traits;
+
+use Psr\Log\LoggerAwareTrait;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait AbstractTrait
+{
+    use LoggerAwareTrait;
+
+    private $namespace;
+    private $namespaceVersion = '';
+    private $versioningIsEnabled = false;
+    private $deferred = [];
+
+    /**
+     * @var int|null The maximum length to enforce for identifiers or null when no limit applies
+     */
+    protected $maxIdLength;
+
+    /**
+     * Fetches several cache items.
+     *
+     * @param array $ids The cache identifiers to fetch
+     *
+     * @return array|\Traversable The corresponding values found in the cache
+     */
+    abstract protected function doFetch(array $ids);
+
+    /**
+     * Confirms if the cache contains specified cache item.
+     *
+     * @param string $id The identifier for which to check existence
+     *
+     * @return bool True if item exists in the cache, false otherwise
+     */
+    abstract protected function doHave($id);
+
+    /**
+     * Deletes all items in the pool.
+     *
+     * @param string $namespace The prefix used for all identifiers managed by this pool
+     *
+     * @return bool True if the pool was successfully cleared, false otherwise
+     */
+    abstract protected function doClear($namespace);
+
+    /**
+     * Removes multiple items from the pool.
+     *
+     * @param array $ids An array of identifiers that should be removed from the pool
+     *
+     * @return bool True if the items were successfully removed, false otherwise
+     */
+    abstract protected function doDelete(array $ids);
+
+    /**
+     * Persists several cache items immediately.
+     *
+     * @param array $values   The values to cache, indexed by their cache identifier
+     * @param int   $lifetime The lifetime of the cached values, 0 for persisting until manual cleaning
+     *
+     * @return array|bool The identifiers that failed to be cached or a boolean stating if caching succeeded or not
+     */
+    abstract protected function doSave(array $values, $lifetime);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        $id = $this->getId($key);
+
+        if (isset($this->deferred[$key])) {
+            $this->commit();
+        }
+
+        try {
+            return $this->doHave($id);
+        } catch (\Exception $e) {
+            CacheItem::log($this->logger, 'Failed to check if key "{key}" is cached', ['key' => $key, 'exception' => $e]);
+
+            return false;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $this->deferred = [];
+        if ($cleared = $this->versioningIsEnabled) {
+            $namespaceVersion = substr_replace(base64_encode(pack('V', mt_rand())), static::NS_SEPARATOR, 5);
+            try {
+                $cleared = $this->doSave([static::NS_SEPARATOR.$this->namespace => $namespaceVersion], 0);
+            } catch (\Exception $e) {
+                $cleared = false;
+            }
+            if ($cleared = true === $cleared || [] === $cleared) {
+                $this->namespaceVersion = $namespaceVersion;
+            }
+        }
+
+        try {
+            return $this->doClear($this->namespace) || $cleared;
+        } catch (\Exception $e) {
+            CacheItem::log($this->logger, 'Failed to clear the cache', ['exception' => $e]);
+
+            return false;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        return $this->deleteItems([$key]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        $ids = [];
+
+        foreach ($keys as $key) {
+            $ids[$key] = $this->getId($key);
+            unset($this->deferred[$key]);
+        }
+
+        try {
+            if ($this->doDelete($ids)) {
+                return true;
+            }
+        } catch (\Exception $e) {
+        }
+
+        $ok = true;
+
+        // When bulk-delete failed, retry each item individually
+        foreach ($ids as $key => $id) {
+            try {
+                $e = null;
+                if ($this->doDelete([$id])) {
+                    continue;
+                }
+            } catch (\Exception $e) {
+            }
+            CacheItem::log($this->logger, 'Failed to delete key "{key}"', ['key' => $key, 'exception' => $e]);
+            $ok = false;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * Enables/disables versioning of items.
+     *
+     * When versioning is enabled, clearing the cache is atomic and doesn't require listing existing keys to proceed,
+     * but old keys may need garbage collection and extra round-trips to the back-end are required.
+     *
+     * Calling this method also clears the memoized namespace version and thus forces a resynchonization of it.
+     *
+     * @param bool $enable
+     *
+     * @return bool the previous state of versioning
+     */
+    public function enableVersioning($enable = true)
+    {
+        $wasEnabled = $this->versioningIsEnabled;
+        $this->versioningIsEnabled = (bool) $enable;
+        $this->namespaceVersion = '';
+
+        return $wasEnabled;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        if ($this->deferred) {
+            $this->commit();
+        }
+        $this->namespaceVersion = '';
+    }
+
+    /**
+     * Like the native unserialize() function but throws an exception if anything goes wrong.
+     *
+     * @param string $value
+     *
+     * @return mixed
+     *
+     * @throws \Exception
+     */
+    protected static function unserialize($value)
+    {
+        if ('b:0;' === $value) {
+            return false;
+        }
+        $unserializeCallbackHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
+        try {
+            if (false !== $value = unserialize($value)) {
+                return $value;
+            }
+            throw new \DomainException('Failed to unserialize cached value.');
+        } catch (\Error $e) {
+            throw new \ErrorException($e->getMessage(), $e->getCode(), \E_ERROR, $e->getFile(), $e->getLine());
+        } finally {
+            ini_set('unserialize_callback_func', $unserializeCallbackHandler);
+        }
+    }
+
+    private function getId($key)
+    {
+        CacheItem::validateKey($key);
+
+        if ($this->versioningIsEnabled && '' === $this->namespaceVersion) {
+            $this->namespaceVersion = '1'.static::NS_SEPARATOR;
+            try {
+                foreach ($this->doFetch([static::NS_SEPARATOR.$this->namespace]) as $v) {
+                    $this->namespaceVersion = $v;
+                }
+                if ('1'.static::NS_SEPARATOR === $this->namespaceVersion) {
+                    $this->namespaceVersion = substr_replace(base64_encode(pack('V', time())), static::NS_SEPARATOR, 5);
+                    $this->doSave([static::NS_SEPARATOR.$this->namespace => $this->namespaceVersion], 0);
+                }
+            } catch (\Exception $e) {
+            }
+        }
+
+        if (null === $this->maxIdLength) {
+            return $this->namespace.$this->namespaceVersion.$key;
+        }
+        if (\strlen($id = $this->namespace.$this->namespaceVersion.$key) > $this->maxIdLength) {
+            $id = $this->namespace.$this->namespaceVersion.substr_replace(base64_encode(hash('sha256', $key, true)), static::NS_SEPARATOR, -(\strlen($this->namespaceVersion) + 22));
+        }
+
+        return $id;
+    }
+
+    /**
+     * @internal
+     */
+    public static function handleUnserializeCallback($class)
+    {
+        throw new \DomainException('Class not found: '.$class);
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/ApcuTrait.php

@@ -0,0 +1,117 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\CacheException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait ApcuTrait
+{
+    public static function isSupported()
+    {
+        return \function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), \FILTER_VALIDATE_BOOLEAN);
+    }
+
+    private function init($namespace, $defaultLifetime, $version)
+    {
+        if (!static::isSupported()) {
+            throw new CacheException('APCu is not enabled.');
+        }
+        if ('cli' === \PHP_SAPI) {
+            ini_set('apc.use_request_time', 0);
+        }
+        parent::__construct($namespace, $defaultLifetime);
+
+        if (null !== $version) {
+            CacheItem::validateKey($version);
+
+            if (!apcu_exists($version.'@'.$namespace)) {
+                $this->doClear($namespace);
+                apcu_add($version.'@'.$namespace, null);
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        try {
+            foreach (apcu_fetch($ids, $ok) ?: [] as $k => $v) {
+                if (null !== $v || $ok) {
+                    yield $k => $v;
+                }
+            }
+        } catch (\Error $e) {
+            throw new \ErrorException($e->getMessage(), $e->getCode(), \E_ERROR, $e->getFile(), $e->getLine());
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return apcu_exists($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        return isset($namespace[0]) && class_exists('APCuIterator', false) && ('cli' !== \PHP_SAPI || filter_var(ini_get('apc.enable_cli'), \FILTER_VALIDATE_BOOLEAN))
+            ? apcu_delete(new \APCuIterator(sprintf('/^%s/', preg_quote($namespace, '/')), \APC_ITER_KEY))
+            : apcu_clear_cache();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        foreach ($ids as $id) {
+            apcu_delete($id);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        try {
+            if (false === $failures = apcu_store($values, null, $lifetime)) {
+                $failures = $values;
+            }
+
+            return array_keys($failures);
+        } catch (\Error $e) {
+        } catch (\Exception $e) {
+        }
+
+        if (1 === \count($values)) {
+            // Workaround https://github.com/krakjoe/apcu/issues/170
+            apcu_delete(key($values));
+        }
+
+        throw $e;
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/ArrayTrait.php

@@ -0,0 +1,108 @@
+<?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\Cache\Traits;
+
+use Psr\Log\LoggerAwareTrait;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait ArrayTrait
+{
+    use LoggerAwareTrait;
+
+    private $storeSerialized;
+    private $values = [];
+    private $expiries = [];
+
+    /**
+     * Returns all cached values, with cache miss as null.
+     *
+     * @return array
+     */
+    public function getValues()
+    {
+        return $this->values;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        CacheItem::validateKey($key);
+
+        return isset($this->expiries[$key]) && ($this->expiries[$key] > time() || !$this->deleteItem($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $this->values = $this->expiries = [];
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        CacheItem::validateKey($key);
+
+        unset($this->values[$key], $this->expiries[$key]);
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        $this->clear();
+    }
+
+    private function generateItems(array $keys, $now, $f)
+    {
+        foreach ($keys as $i => $key) {
+            try {
+                if (!$isHit = isset($this->expiries[$key]) && ($this->expiries[$key] > $now || !$this->deleteItem($key))) {
+                    $this->values[$key] = $value = null;
+                } elseif (!$this->storeSerialized) {
+                    $value = $this->values[$key];
+                } elseif ('b:0;' === $value = $this->values[$key]) {
+                    $value = false;
+                } elseif (false === $value = unserialize($value)) {
+                    $this->values[$key] = $value = null;
+                    $isHit = false;
+                }
+            } catch (\Exception $e) {
+                CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', ['key' => $key, 'exception' => $e]);
+                $this->values[$key] = $value = null;
+                $isHit = false;
+            }
+            unset($keys[$i]);
+
+            yield $key => $f($key, $value, $isHit);
+        }
+
+        foreach ($keys as $key) {
+            yield $key => $f($key, null, false);
+        }
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/DoctrineTrait.php

@@ -0,0 +1,98 @@
+<?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\Cache\Traits;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait DoctrineTrait
+{
+    private $provider;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        parent::reset();
+        $this->provider->setNamespace($this->provider->getNamespace());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $unserializeCallbackHandler = ini_set('unserialize_callback_func', parent::class.'::handleUnserializeCallback');
+        try {
+            return $this->provider->fetchMultiple($ids);
+        } catch (\Error $e) {
+            $trace = $e->getTrace();
+
+            if (isset($trace[0]['function']) && !isset($trace[0]['class'])) {
+                switch ($trace[0]['function']) {
+                    case 'unserialize':
+                    case 'apcu_fetch':
+                    case 'apc_fetch':
+                        throw new \ErrorException($e->getMessage(), $e->getCode(), \E_ERROR, $e->getFile(), $e->getLine());
+                }
+            }
+
+            throw $e;
+        } finally {
+            ini_set('unserialize_callback_func', $unserializeCallbackHandler);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return $this->provider->contains($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        $namespace = $this->provider->getNamespace();
+
+        return isset($namespace[0])
+            ? $this->provider->deleteAll()
+            : $this->provider->flushAll();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        $ok = true;
+        foreach ($ids as $id) {
+            $ok = $this->provider->delete($id) && $ok;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        return $this->provider->saveMultiple($values, $lifetime);
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/FilesystemCommonTrait.php

@@ -0,0 +1,138 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait FilesystemCommonTrait
+{
+    private $directory;
+    private $tmp;
+
+    private function init($namespace, $directory)
+    {
+        if (!isset($directory[0])) {
+            $directory = sys_get_temp_dir().'/symfony-cache';
+        } else {
+            $directory = realpath($directory) ?: $directory;
+        }
+        if (isset($namespace[0])) {
+            if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {
+                throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
+            }
+            $directory .= \DIRECTORY_SEPARATOR.$namespace;
+        }
+        if (!file_exists($directory)) {
+            @mkdir($directory, 0777, true);
+        }
+        $directory .= \DIRECTORY_SEPARATOR;
+        // On Windows the whole path is limited to 258 chars
+        if ('\\' === \DIRECTORY_SEPARATOR && \strlen($directory) > 234) {
+            throw new InvalidArgumentException(sprintf('Cache directory too long (%s).', $directory));
+        }
+
+        $this->directory = $directory;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        $ok = true;
+
+        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS)) as $file) {
+            $ok = ($file->isDir() || @unlink($file) || !file_exists($file)) && $ok;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        $ok = true;
+
+        foreach ($ids as $id) {
+            $file = $this->getFile($id);
+            $ok = (!file_exists($file) || @unlink($file) || !file_exists($file)) && $ok;
+        }
+
+        return $ok;
+    }
+
+    private function write($file, $data, $expiresAt = null)
+    {
+        set_error_handler(__CLASS__.'::throwError');
+        try {
+            if (null === $this->tmp) {
+                $this->tmp = $this->directory.uniqid('', true);
+            }
+            file_put_contents($this->tmp, $data);
+
+            if (null !== $expiresAt) {
+                touch($this->tmp, $expiresAt);
+            }
+
+            return rename($this->tmp, $file);
+        } finally {
+            restore_error_handler();
+        }
+    }
+
+    private function getFile($id, $mkdir = false)
+    {
+        $hash = str_replace('/', '-', base64_encode(hash('sha256', static::class.$id, true)));
+        $dir = $this->directory.strtoupper($hash[0].\DIRECTORY_SEPARATOR.$hash[1].\DIRECTORY_SEPARATOR);
+
+        if ($mkdir && !file_exists($dir)) {
+            @mkdir($dir, 0777, true);
+        }
+
+        return $dir.substr($hash, 2, 20);
+    }
+
+    /**
+     * @internal
+     */
+    public static function throwError($type, $message, $file, $line)
+    {
+        throw new \ErrorException($message, 0, $type, $file, $line);
+    }
+
+    public function __sleep()
+    {
+        throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
+    }
+
+    public function __wakeup()
+    {
+        throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
+    }
+
+    public function __destruct()
+    {
+        if (method_exists(parent::class, '__destruct')) {
+            parent::__destruct();
+        }
+        if (null !== $this->tmp && file_exists($this->tmp)) {
+            unlink($this->tmp);
+        }
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/FilesystemTrait.php

@@ -0,0 +1,107 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\Exception\CacheException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author Rob Frawley 2nd <rmf@src.run>
+ *
+ * @internal
+ */
+trait FilesystemTrait
+{
+    use FilesystemCommonTrait;
+
+    /**
+     * @return bool
+     */
+    public function prune()
+    {
+        $time = time();
+        $pruned = true;
+
+        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
+            if (!$h = @fopen($file, 'rb')) {
+                continue;
+            }
+
+            if (($expiresAt = (int) fgets($h)) && $time >= $expiresAt) {
+                fclose($h);
+                $pruned = @unlink($file) && !file_exists($file) && $pruned;
+            } else {
+                fclose($h);
+            }
+        }
+
+        return $pruned;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $values = [];
+        $now = time();
+
+        foreach ($ids as $id) {
+            $file = $this->getFile($id);
+            if (!file_exists($file) || !$h = @fopen($file, 'rb')) {
+                continue;
+            }
+            if (($expiresAt = (int) fgets($h)) && $now >= $expiresAt) {
+                fclose($h);
+                @unlink($file);
+            } else {
+                $i = rawurldecode(rtrim(fgets($h)));
+                $value = stream_get_contents($h);
+                fclose($h);
+                if ($i === $id) {
+                    $values[$id] = parent::unserialize($value);
+                }
+            }
+        }
+
+        return $values;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        $file = $this->getFile($id);
+
+        return file_exists($file) && (@filemtime($file) > time() || $this->doFetch([$id]));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        $ok = true;
+        $expiresAt = $lifetime ? (time() + $lifetime) : 0;
+
+        foreach ($values as $id => $value) {
+            $ok = $this->write($this->getFile($id, true), $expiresAt."\n".rawurlencode($id)."\n".serialize($value), $expiresAt) && $ok;
+        }
+
+        if (!$ok && !is_writable($this->directory)) {
+            throw new CacheException(sprintf('Cache directory is not writable (%s).', $this->directory));
+        }
+
+        return $ok;
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/MemcachedTrait.php

@@ -0,0 +1,297 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\Exception\CacheException;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Rob Frawley 2nd <rmf@src.run>
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait MemcachedTrait
+{
+    private static $defaultClientOptions = [
+        'persistent_id' => null,
+        'username' => null,
+        'password' => null,
+        \Memcached::OPT_SERIALIZER => \Memcached::SERIALIZER_PHP,
+    ];
+
+    private $client;
+    private $lazyClient;
+
+    public static function isSupported()
+    {
+        return \extension_loaded('memcached') && version_compare(phpversion('memcached'), '2.2.0', '>=');
+    }
+
+    private function init(\Memcached $client, $namespace, $defaultLifetime)
+    {
+        if (!static::isSupported()) {
+            throw new CacheException('Memcached >= 2.2.0 is required.');
+        }
+        if ('Memcached' === \get_class($client)) {
+            $opt = $client->getOption(\Memcached::OPT_SERIALIZER);
+            if (\Memcached::SERIALIZER_PHP !== $opt && \Memcached::SERIALIZER_IGBINARY !== $opt) {
+                throw new CacheException('MemcachedAdapter: "serializer" option must be "php" or "igbinary".');
+            }
+            $this->maxIdLength -= \strlen($client->getOption(\Memcached::OPT_PREFIX_KEY));
+            $this->client = $client;
+        } else {
+            $this->lazyClient = $client;
+        }
+
+        parent::__construct($namespace, $defaultLifetime);
+        $this->enableVersioning();
+    }
+
+    /**
+     * Creates a Memcached instance.
+     *
+     * By default, the binary protocol, no block, and libketama compatible options are enabled.
+     *
+     * Examples for servers:
+     * - 'memcached://user:pass@localhost?weight=33'
+     * - [['localhost', 11211, 33]]
+     *
+     * @param array[]|string|string[] $servers An array of servers, a DSN, or an array of DSNs
+     * @param array                   $options An array of options
+     *
+     * @return \Memcached
+     *
+     * @throws \ErrorException When invalid options or servers are provided
+     */
+    public static function createConnection($servers, array $options = [])
+    {
+        if (\is_string($servers)) {
+            $servers = [$servers];
+        } elseif (!\is_array($servers)) {
+            throw new InvalidArgumentException(sprintf('MemcachedAdapter::createClient() expects array or string as first argument, "%s" given.', \gettype($servers)));
+        }
+        if (!static::isSupported()) {
+            throw new CacheException('Memcached >= 2.2.0 is required.');
+        }
+        set_error_handler(function ($type, $msg, $file, $line) { throw new \ErrorException($msg, 0, $type, $file, $line); });
+        try {
+            $options += static::$defaultClientOptions;
+            $client = new \Memcached($options['persistent_id']);
+            $username = $options['username'];
+            $password = $options['password'];
+
+            // parse any DSN in $servers
+            foreach ($servers as $i => $dsn) {
+                if (\is_array($dsn)) {
+                    continue;
+                }
+                if (0 !== strpos($dsn, 'memcached://')) {
+                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: "%s" does not start with "memcached://".', $dsn));
+                }
+                $params = preg_replace_callback('#^memcached://(?:([^@]*+)@)?#', function ($m) use (&$username, &$password) {
+                    if (!empty($m[1])) {
+                        list($username, $password) = explode(':', $m[1], 2) + [1 => null];
+                    }
+
+                    return 'file://';
+                }, $dsn);
+                if (false === $params = parse_url($params)) {
+                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: "%s".', $dsn));
+                }
+                if (!isset($params['host']) && !isset($params['path'])) {
+                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: "%s".', $dsn));
+                }
+                if (isset($params['path']) && preg_match('#/(\d+)$#', $params['path'], $m)) {
+                    $params['weight'] = $m[1];
+                    $params['path'] = substr($params['path'], 0, -\strlen($m[0]));
+                }
+                $params += [
+                    'host' => isset($params['host']) ? $params['host'] : $params['path'],
+                    'port' => isset($params['host']) ? 11211 : null,
+                    'weight' => 0,
+                ];
+                if (isset($params['query'])) {
+                    parse_str($params['query'], $query);
+                    $params += $query;
+                    $options = $query + $options;
+                }
+
+                $servers[$i] = [$params['host'], $params['port'], $params['weight']];
+            }
+
+            // set client's options
+            unset($options['persistent_id'], $options['username'], $options['password'], $options['weight'], $options['lazy']);
+            $options = array_change_key_case($options, \CASE_UPPER);
+            $client->setOption(\Memcached::OPT_BINARY_PROTOCOL, true);
+            $client->setOption(\Memcached::OPT_NO_BLOCK, true);
+            $client->setOption(\Memcached::OPT_TCP_NODELAY, true);
+            if (!\array_key_exists('LIBKETAMA_COMPATIBLE', $options) && !\array_key_exists(\Memcached::OPT_LIBKETAMA_COMPATIBLE, $options)) {
+                $client->setOption(\Memcached::OPT_LIBKETAMA_COMPATIBLE, true);
+            }
+            foreach ($options as $name => $value) {
+                if (\is_int($name)) {
+                    continue;
+                }
+                if ('HASH' === $name || 'SERIALIZER' === $name || 'DISTRIBUTION' === $name) {
+                    $value = \constant('Memcached::'.$name.'_'.strtoupper($value));
+                }
+                $opt = \constant('Memcached::OPT_'.$name);
+
+                unset($options[$name]);
+                $options[$opt] = $value;
+            }
+            $client->setOptions($options);
+
+            // set client's servers, taking care of persistent connections
+            if (!$client->isPristine()) {
+                $oldServers = [];
+                foreach ($client->getServerList() as $server) {
+                    $oldServers[] = [$server['host'], $server['port']];
+                }
+
+                $newServers = [];
+                foreach ($servers as $server) {
+                    if (1 < \count($server)) {
+                        $server = array_values($server);
+                        unset($server[2]);
+                        $server[1] = (int) $server[1];
+                    }
+                    $newServers[] = $server;
+                }
+
+                if ($oldServers !== $newServers) {
+                    $client->resetServerList();
+                    $client->addServers($servers);
+                }
+            } else {
+                $client->addServers($servers);
+            }
+
+            if (null !== $username || null !== $password) {
+                if (!method_exists($client, 'setSaslAuthData')) {
+                    trigger_error('Missing SASL support: the memcached extension must be compiled with --enable-memcached-sasl.');
+                }
+                $client->setSaslAuthData($username, $password);
+            }
+
+            return $client;
+        } finally {
+            restore_error_handler();
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        if ($lifetime && $lifetime > 30 * 86400) {
+            $lifetime += time();
+        }
+
+        $encodedValues = [];
+        foreach ($values as $key => $value) {
+            $encodedValues[rawurlencode($key)] = $value;
+        }
+
+        return $this->checkResultCode($this->getClient()->setMulti($encodedValues, $lifetime));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $unserializeCallbackHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
+        try {
+            $encodedIds = array_map('rawurlencode', $ids);
+
+            $encodedResult = $this->checkResultCode($this->getClient()->getMulti($encodedIds));
+
+            $result = [];
+            foreach ($encodedResult as $key => $value) {
+                $result[rawurldecode($key)] = $value;
+            }
+
+            return $result;
+        } catch (\Error $e) {
+            throw new \ErrorException($e->getMessage(), $e->getCode(), \E_ERROR, $e->getFile(), $e->getLine());
+        } finally {
+            ini_set('unserialize_callback_func', $unserializeCallbackHandler);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return false !== $this->getClient()->get(rawurlencode($id)) || $this->checkResultCode(\Memcached::RES_SUCCESS === $this->client->getResultCode());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        $ok = true;
+        $encodedIds = array_map('rawurlencode', $ids);
+        foreach ($this->checkResultCode($this->getClient()->deleteMulti($encodedIds)) as $result) {
+            if (\Memcached::RES_SUCCESS !== $result && \Memcached::RES_NOTFOUND !== $result) {
+                $ok = false;
+                break;
+            }
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        return '' === $namespace && $this->getClient()->flush();
+    }
+
+    private function checkResultCode($result)
+    {
+        $code = $this->client->getResultCode();
+
+        if (\Memcached::RES_SUCCESS === $code || \Memcached::RES_NOTFOUND === $code) {
+            return $result;
+        }
+
+        throw new CacheException('MemcachedAdapter client error: '.strtolower($this->client->getResultMessage()));
+    }
+
+    /**
+     * @return \Memcached
+     */
+    private function getClient()
+    {
+        if ($this->client) {
+            return $this->client;
+        }
+
+        $opt = $this->lazyClient->getOption(\Memcached::OPT_SERIALIZER);
+        if (\Memcached::SERIALIZER_PHP !== $opt && \Memcached::SERIALIZER_IGBINARY !== $opt) {
+            throw new CacheException('MemcachedAdapter: "serializer" option must be "php" or "igbinary".');
+        }
+        if ('' !== $prefix = (string) $this->lazyClient->getOption(\Memcached::OPT_PREFIX_KEY)) {
+            throw new CacheException(sprintf('MemcachedAdapter: "prefix_key" option must be empty when using proxified connections, "%s" given.', $prefix));
+        }
+
+        return $this->client = $this->lazyClient;
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/PdoTrait.php

@@ -0,0 +1,435 @@
+<?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\Cache\Traits;
+
+use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\DBALException;
+use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
+use Doctrine\DBAL\Schema\Schema;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @internal
+ */
+trait PdoTrait
+{
+    private $conn;
+    private $dsn;
+    private $driver;
+    private $serverVersion;
+    private $table = 'cache_items';
+    private $idCol = 'item_id';
+    private $dataCol = 'item_data';
+    private $lifetimeCol = 'item_lifetime';
+    private $timeCol = 'item_time';
+    private $username = '';
+    private $password = '';
+    private $connectionOptions = [];
+    private $namespace;
+
+    private function init($connOrDsn, $namespace, $defaultLifetime, array $options)
+    {
+        if (isset($namespace[0]) && preg_match('#[^-+.A-Za-z0-9]#', $namespace, $match)) {
+            throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+.A-Za-z0-9] are allowed.', $match[0]));
+        }
+
+        if ($connOrDsn instanceof \PDO) {
+            if (\PDO::ERRMODE_EXCEPTION !== $connOrDsn->getAttribute(\PDO::ATTR_ERRMODE)) {
+                throw new InvalidArgumentException(sprintf('"%s" requires PDO error mode attribute be set to throw Exceptions (i.e. $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION)).', __CLASS__));
+            }
+
+            $this->conn = $connOrDsn;
+        } elseif ($connOrDsn instanceof Connection) {
+            $this->conn = $connOrDsn;
+        } elseif (\is_string($connOrDsn)) {
+            $this->dsn = $connOrDsn;
+        } else {
+            throw new InvalidArgumentException(sprintf('"%s" requires PDO or Doctrine\DBAL\Connection instance or DSN string as first argument, "%s" given.', __CLASS__, \is_object($connOrDsn) ? \get_class($connOrDsn) : \gettype($connOrDsn)));
+        }
+
+        $this->table = isset($options['db_table']) ? $options['db_table'] : $this->table;
+        $this->idCol = isset($options['db_id_col']) ? $options['db_id_col'] : $this->idCol;
+        $this->dataCol = isset($options['db_data_col']) ? $options['db_data_col'] : $this->dataCol;
+        $this->lifetimeCol = isset($options['db_lifetime_col']) ? $options['db_lifetime_col'] : $this->lifetimeCol;
+        $this->timeCol = isset($options['db_time_col']) ? $options['db_time_col'] : $this->timeCol;
+        $this->username = isset($options['db_username']) ? $options['db_username'] : $this->username;
+        $this->password = isset($options['db_password']) ? $options['db_password'] : $this->password;
+        $this->connectionOptions = isset($options['db_connection_options']) ? $options['db_connection_options'] : $this->connectionOptions;
+        $this->namespace = $namespace;
+
+        parent::__construct($namespace, $defaultLifetime);
+    }
+
+    /**
+     * Creates the table to store cache items which can be called once for setup.
+     *
+     * Cache ID are saved in a column of maximum length 255. Cache data is
+     * saved in a BLOB.
+     *
+     * @throws \PDOException    When the table already exists
+     * @throws DBALException    When the table already exists
+     * @throws \DomainException When an unsupported PDO driver is used
+     */
+    public function createTable()
+    {
+        // connect if we are not yet
+        $conn = $this->getConnection();
+
+        if ($conn instanceof Connection) {
+            $types = [
+                'mysql' => 'binary',
+                'sqlite' => 'text',
+                'pgsql' => 'string',
+                'oci' => 'string',
+                'sqlsrv' => 'string',
+            ];
+            if (!isset($types[$this->driver])) {
+                throw new \DomainException(sprintf('Creating the cache table is currently not implemented for PDO driver "%s".', $this->driver));
+            }
+
+            $schema = new Schema();
+            $table = $schema->createTable($this->table);
+            $table->addColumn($this->idCol, $types[$this->driver], ['length' => 255]);
+            $table->addColumn($this->dataCol, 'blob', ['length' => 16777215]);
+            $table->addColumn($this->lifetimeCol, 'integer', ['unsigned' => true, 'notnull' => false]);
+            $table->addColumn($this->timeCol, 'integer', ['unsigned' => true]);
+            $table->setPrimaryKey([$this->idCol]);
+
+            foreach ($schema->toSql($conn->getDatabasePlatform()) as $sql) {
+                if (method_exists($conn, 'executeStatement')) {
+                    $conn->executeStatement($sql);
+                } else {
+                    $conn->exec($sql);
+                }
+            }
+
+            return;
+        }
+
+        switch ($this->driver) {
+            case 'mysql':
+                // We use varbinary for the ID column because it prevents unwanted conversions:
+                // - character set conversions between server and client
+                // - trailing space removal
+                // - case-insensitivity
+                // - language processing like é == e
+                $sql = "CREATE TABLE $this->table ($this->idCol VARBINARY(255) NOT NULL PRIMARY KEY, $this->dataCol MEDIUMBLOB NOT NULL, $this->lifetimeCol INTEGER UNSIGNED, $this->timeCol INTEGER UNSIGNED NOT NULL) COLLATE utf8_bin, ENGINE = InnoDB";
+                break;
+            case 'sqlite':
+                $sql = "CREATE TABLE $this->table ($this->idCol TEXT NOT NULL PRIMARY KEY, $this->dataCol BLOB NOT NULL, $this->lifetimeCol INTEGER, $this->timeCol INTEGER NOT NULL)";
+                break;
+            case 'pgsql':
+                $sql = "CREATE TABLE $this->table ($this->idCol VARCHAR(255) NOT NULL PRIMARY KEY, $this->dataCol BYTEA NOT NULL, $this->lifetimeCol INTEGER, $this->timeCol INTEGER NOT NULL)";
+                break;
+            case 'oci':
+                $sql = "CREATE TABLE $this->table ($this->idCol VARCHAR2(255) NOT NULL PRIMARY KEY, $this->dataCol BLOB NOT NULL, $this->lifetimeCol INTEGER, $this->timeCol INTEGER NOT NULL)";
+                break;
+            case 'sqlsrv':
+                $sql = "CREATE TABLE $this->table ($this->idCol VARCHAR(255) NOT NULL PRIMARY KEY, $this->dataCol VARBINARY(MAX) NOT NULL, $this->lifetimeCol INTEGER, $this->timeCol INTEGER NOT NULL)";
+                break;
+            default:
+                throw new \DomainException(sprintf('Creating the cache table is currently not implemented for PDO driver "%s".', $this->driver));
+        }
+
+        if (method_exists($conn, 'executeStatement')) {
+            $conn->executeStatement($sql);
+        } else {
+            $conn->exec($sql);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prune()
+    {
+        $deleteSql = "DELETE FROM $this->table WHERE $this->lifetimeCol + $this->timeCol <= :time";
+
+        if ('' !== $this->namespace) {
+            $deleteSql .= " AND $this->idCol LIKE :namespace";
+        }
+
+        $delete = $this->getConnection()->prepare($deleteSql);
+        $delete->bindValue(':time', time(), \PDO::PARAM_INT);
+
+        if ('' !== $this->namespace) {
+            $delete->bindValue(':namespace', sprintf('%s%%', $this->namespace), \PDO::PARAM_STR);
+        }
+
+        return $delete->execute();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $now = time();
+        $expired = [];
+
+        $sql = str_pad('', (\count($ids) << 1) - 1, '?,');
+        $sql = "SELECT $this->idCol, CASE WHEN $this->lifetimeCol IS NULL OR $this->lifetimeCol + $this->timeCol > ? THEN $this->dataCol ELSE NULL END FROM $this->table WHERE $this->idCol IN ($sql)";
+        $stmt = $this->getConnection()->prepare($sql);
+        $stmt->bindValue($i = 1, $now, \PDO::PARAM_INT);
+        foreach ($ids as $id) {
+            $stmt->bindValue(++$i, $id);
+        }
+        $result = $stmt->execute();
+
+        if (\is_object($result)) {
+            $result = $result->iterateNumeric();
+        } else {
+            $stmt->setFetchMode(\PDO::FETCH_NUM);
+            $result = $stmt;
+        }
+
+        foreach ($result as $row) {
+            if (null === $row[1]) {
+                $expired[] = $row[0];
+            } else {
+                yield $row[0] => parent::unserialize(\is_resource($row[1]) ? stream_get_contents($row[1]) : $row[1]);
+            }
+        }
+
+        if ($expired) {
+            $sql = str_pad('', (\count($expired) << 1) - 1, '?,');
+            $sql = "DELETE FROM $this->table WHERE $this->lifetimeCol + $this->timeCol <= ? AND $this->idCol IN ($sql)";
+            $stmt = $this->getConnection()->prepare($sql);
+            $stmt->bindValue($i = 1, $now, \PDO::PARAM_INT);
+            foreach ($expired as $id) {
+                $stmt->bindValue(++$i, $id);
+            }
+            $stmt->execute();
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        $sql = "SELECT 1 FROM $this->table WHERE $this->idCol = :id AND ($this->lifetimeCol IS NULL OR $this->lifetimeCol + $this->timeCol > :time)";
+        $stmt = $this->getConnection()->prepare($sql);
+
+        $stmt->bindValue(':id', $id);
+        $stmt->bindValue(':time', time(), \PDO::PARAM_INT);
+        $result = $stmt->execute();
+
+        return (bool) (\is_object($result) ? $result->fetchOne() : $stmt->fetchColumn());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        $conn = $this->getConnection();
+
+        if ('' === $namespace) {
+            if ('sqlite' === $this->driver) {
+                $sql = "DELETE FROM $this->table";
+            } else {
+                $sql = "TRUNCATE TABLE $this->table";
+            }
+        } else {
+            $sql = "DELETE FROM $this->table WHERE $this->idCol LIKE '$namespace%'";
+        }
+
+        if (method_exists($conn, 'executeStatement')) {
+            $conn->executeStatement($sql);
+        } else {
+            $conn->exec($sql);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        $sql = str_pad('', (\count($ids) << 1) - 1, '?,');
+        $sql = "DELETE FROM $this->table WHERE $this->idCol IN ($sql)";
+        $stmt = $this->getConnection()->prepare($sql);
+        $stmt->execute(array_values($ids));
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        $serialized = [];
+        $failed = [];
+
+        foreach ($values as $id => $value) {
+            try {
+                $serialized[$id] = serialize($value);
+            } catch (\Exception $e) {
+                $failed[] = $id;
+            }
+        }
+
+        if (!$serialized) {
+            return $failed;
+        }
+
+        $conn = $this->getConnection();
+        $driver = $this->driver;
+        $insertSql = "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, :data, :lifetime, :time)";
+
+        switch (true) {
+            case 'mysql' === $driver:
+                $sql = $insertSql." ON DUPLICATE KEY UPDATE $this->dataCol = VALUES($this->dataCol), $this->lifetimeCol = VALUES($this->lifetimeCol), $this->timeCol = VALUES($this->timeCol)";
+                break;
+            case 'oci' === $driver:
+                // DUAL is Oracle specific dummy table
+                $sql = "MERGE INTO $this->table USING DUAL ON ($this->idCol = ?) ".
+                    "WHEN NOT MATCHED THEN INSERT ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (?, ?, ?, ?) ".
+                    "WHEN MATCHED THEN UPDATE SET $this->dataCol = ?, $this->lifetimeCol = ?, $this->timeCol = ?";
+                break;
+            case 'sqlsrv' === $driver && version_compare($this->getServerVersion(), '10', '>='):
+                // MERGE is only available since SQL Server 2008 and must be terminated by semicolon
+                // It also requires HOLDLOCK according to http://weblogs.sqlteam.com/dang/archive/2009/01/31/UPSERT-Race-Condition-With-MERGE.aspx
+                $sql = "MERGE INTO $this->table WITH (HOLDLOCK) USING (SELECT 1 AS dummy) AS src ON ($this->idCol = ?) ".
+                    "WHEN NOT MATCHED THEN INSERT ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (?, ?, ?, ?) ".
+                    "WHEN MATCHED THEN UPDATE SET $this->dataCol = ?, $this->lifetimeCol = ?, $this->timeCol = ?;";
+                break;
+            case 'sqlite' === $driver:
+                $sql = 'INSERT OR REPLACE'.substr($insertSql, 6);
+                break;
+            case 'pgsql' === $driver && version_compare($this->getServerVersion(), '9.5', '>='):
+                $sql = $insertSql." ON CONFLICT ($this->idCol) DO UPDATE SET ($this->dataCol, $this->lifetimeCol, $this->timeCol) = (EXCLUDED.$this->dataCol, EXCLUDED.$this->lifetimeCol, EXCLUDED.$this->timeCol)";
+                break;
+            default:
+                $driver = null;
+                $sql = "UPDATE $this->table SET $this->dataCol = :data, $this->lifetimeCol = :lifetime, $this->timeCol = :time WHERE $this->idCol = :id";
+                break;
+        }
+
+        $now = time();
+        $lifetime = $lifetime ?: null;
+        $stmt = $conn->prepare($sql);
+
+        if ('sqlsrv' === $driver || 'oci' === $driver) {
+            $stmt->bindParam(1, $id);
+            $stmt->bindParam(2, $id);
+            $stmt->bindParam(3, $data, \PDO::PARAM_LOB);
+            $stmt->bindValue(4, $lifetime, \PDO::PARAM_INT);
+            $stmt->bindValue(5, $now, \PDO::PARAM_INT);
+            $stmt->bindParam(6, $data, \PDO::PARAM_LOB);
+            $stmt->bindValue(7, $lifetime, \PDO::PARAM_INT);
+            $stmt->bindValue(8, $now, \PDO::PARAM_INT);
+        } else {
+            $stmt->bindParam(':id', $id);
+            $stmt->bindParam(':data', $data, \PDO::PARAM_LOB);
+            $stmt->bindValue(':lifetime', $lifetime, \PDO::PARAM_INT);
+            $stmt->bindValue(':time', $now, \PDO::PARAM_INT);
+        }
+        if (null === $driver) {
+            $insertStmt = $conn->prepare($insertSql);
+
+            $insertStmt->bindParam(':id', $id);
+            $insertStmt->bindParam(':data', $data, \PDO::PARAM_LOB);
+            $insertStmt->bindValue(':lifetime', $lifetime, \PDO::PARAM_INT);
+            $insertStmt->bindValue(':time', $now, \PDO::PARAM_INT);
+        }
+
+        foreach ($serialized as $id => $data) {
+            $result = $stmt->execute();
+
+            if (null === $driver && !(\is_object($result) ? $result->rowCount() : $stmt->rowCount())) {
+                try {
+                    $insertStmt->execute();
+                } catch (DBALException $e) {
+                } catch (\PDOException $e) {
+                    // A concurrent write won, let it be
+                }
+            }
+        }
+
+        return $failed;
+    }
+
+    /**
+     * @return \PDO|Connection
+     */
+    private function getConnection()
+    {
+        if (null === $this->conn) {
+            $this->conn = new \PDO($this->dsn, $this->username, $this->password, $this->connectionOptions);
+            $this->conn->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
+        }
+        if (null === $this->driver) {
+            if ($this->conn instanceof \PDO) {
+                $this->driver = $this->conn->getAttribute(\PDO::ATTR_DRIVER_NAME);
+            } else {
+                $driver = $this->conn->getDriver();
+
+                switch (true) {
+                    case $driver instanceof \Doctrine\DBAL\Driver\AbstractMySQLDriver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\DrizzlePDOMySql\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\Mysqli\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDOMySql\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDO\MySQL\Driver:
+                        $this->driver = 'mysql';
+                        break;
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDOSqlite\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDO\SQLite\Driver:
+                        $this->driver = 'sqlite';
+                        break;
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDOPgSql\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDO\PgSQL\Driver:
+                        $this->driver = 'pgsql';
+                        break;
+                    case $driver instanceof \Doctrine\DBAL\Driver\OCI8\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDOOracle\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDO\OCI\Driver:
+                        $this->driver = 'oci';
+                        break;
+                    case $driver instanceof \Doctrine\DBAL\Driver\SQLSrv\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDOSqlsrv\Driver:
+                    case $driver instanceof \Doctrine\DBAL\Driver\PDO\SQLSrv\Driver:
+                        $this->driver = 'sqlsrv';
+                        break;
+                    default:
+                        $this->driver = \get_class($driver);
+                        break;
+                }
+            }
+        }
+
+        return $this->conn;
+    }
+
+    /**
+     * @return string
+     */
+    private function getServerVersion()
+    {
+        if (null === $this->serverVersion) {
+            $conn = $this->conn instanceof \PDO ? $this->conn : $this->conn->getWrappedConnection();
+            if ($conn instanceof \PDO) {
+                $this->serverVersion = $conn->getAttribute(\PDO::ATTR_SERVER_VERSION);
+            } elseif ($conn instanceof ServerInfoAwareConnection) {
+                $this->serverVersion = $conn->getServerVersion();
+            } else {
+                $this->serverVersion = '0';
+            }
+        }
+
+        return $this->serverVersion;
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/PhpArrayTrait.php

@@ -0,0 +1,152 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Titouan Galopin <galopintitouan@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait PhpArrayTrait
+{
+    use ProxyTrait;
+
+    private $file;
+    private $values;
+    private $zendDetectUnicode;
+
+    private static $valuesCache = [];
+
+    /**
+     * Store an array of cached values.
+     *
+     * @param array $values The cached values
+     */
+    public function warmUp(array $values)
+    {
+        if (file_exists($this->file)) {
+            if (!is_file($this->file)) {
+                throw new InvalidArgumentException(sprintf('Cache path exists and is not a file: "%s".', $this->file));
+            }
+
+            if (!is_writable($this->file)) {
+                throw new InvalidArgumentException(sprintf('Cache file is not writable: "%s".', $this->file));
+            }
+        } else {
+            $directory = \dirname($this->file);
+
+            if (!is_dir($directory) && !@mkdir($directory, 0777, true)) {
+                throw new InvalidArgumentException(sprintf('Cache directory does not exist and cannot be created: "%s".', $directory));
+            }
+
+            if (!is_writable($directory)) {
+                throw new InvalidArgumentException(sprintf('Cache directory is not writable: "%s".', $directory));
+            }
+        }
+
+        $dump = <<<'EOF'
+<?php
+
+// This file has been auto-generated by the Symfony Cache Component.
+
+return [
+
+
+EOF;
+
+        foreach ($values as $key => $value) {
+            CacheItem::validateKey(\is_int($key) ? (string) $key : $key);
+
+            if (null === $value || \is_object($value)) {
+                try {
+                    $value = serialize($value);
+                } catch (\Exception $e) {
+                    throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable "%s" value.', $key, \get_class($value)), 0, $e);
+                }
+            } elseif (\is_array($value)) {
+                try {
+                    $serialized = serialize($value);
+                    $unserialized = unserialize($serialized);
+                } catch (\Exception $e) {
+                    throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable array value.', $key), 0, $e);
+                }
+                // Store arrays serialized if they contain any objects or references
+                if ($unserialized !== $value || (false !== strpos($serialized, ';R:') && preg_match('/;R:[1-9]/', $serialized))) {
+                    $value = $serialized;
+                }
+            } elseif (\is_string($value)) {
+                // Serialize strings if they could be confused with serialized objects or arrays
+                if ('N;' === $value || (isset($value[2]) && ':' === $value[1])) {
+                    $value = serialize($value);
+                }
+            } elseif (!is_scalar($value)) {
+                throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable "%s" value.', $key, \gettype($value)));
+            }
+
+            $dump .= var_export($key, true).' => '.var_export($value, true).",\n";
+        }
+
+        $dump .= "\n];\n";
+        $dump = str_replace("' . \"\\0\" . '", "\0", $dump);
+
+        $tmpFile = uniqid($this->file, true);
+
+        file_put_contents($tmpFile, $dump);
+        @chmod($tmpFile, 0666 & ~umask());
+        unset($serialized, $unserialized, $value, $dump);
+
+        @rename($tmpFile, $this->file);
+        unset(self::$valuesCache[$this->file]);
+
+        $this->initialize();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $this->values = [];
+
+        $cleared = @unlink($this->file) || !file_exists($this->file);
+        unset(self::$valuesCache[$this->file]);
+
+        return $this->pool->clear() && $cleared;
+    }
+
+    /**
+     * Load the cache file.
+     */
+    private function initialize()
+    {
+        if (isset(self::$valuesCache[$this->file])) {
+            $this->values = self::$valuesCache[$this->file];
+
+            return;
+        }
+
+        if ($this->zendDetectUnicode) {
+            $zmb = ini_set('zend.detect_unicode', 0);
+        }
+        try {
+            $this->values = self::$valuesCache[$this->file] = file_exists($this->file) ? (include $this->file ?: []) : [];
+        } finally {
+            if ($this->zendDetectUnicode) {
+                ini_set('zend.detect_unicode', $zmb);
+            }
+        }
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/PhpFilesTrait.php

@@ -0,0 +1,158 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\Exception\CacheException;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Piotr Stankowski <git@trakos.pl>
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author Rob Frawley 2nd <rmf@src.run>
+ *
+ * @internal
+ */
+trait PhpFilesTrait
+{
+    use FilesystemCommonTrait;
+
+    private $includeHandler;
+    private $zendDetectUnicode;
+
+    public static function isSupported()
+    {
+        return \function_exists('opcache_invalidate') && filter_var(ini_get('opcache.enable'), \FILTER_VALIDATE_BOOLEAN);
+    }
+
+    /**
+     * @return bool
+     */
+    public function prune()
+    {
+        $time = time();
+        $pruned = true;
+        $allowCompile = 'cli' !== \PHP_SAPI || filter_var(ini_get('opcache.enable_cli'), \FILTER_VALIDATE_BOOLEAN);
+
+        set_error_handler($this->includeHandler);
+        try {
+            foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
+                list($expiresAt) = include $file;
+
+                if ($time >= $expiresAt) {
+                    $pruned = @unlink($file) && !file_exists($file) && $pruned;
+
+                    if ($allowCompile) {
+                        @opcache_invalidate($file, true);
+                    }
+                }
+            }
+        } finally {
+            restore_error_handler();
+        }
+
+        return $pruned;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $values = [];
+        $now = time();
+
+        if ($this->zendDetectUnicode) {
+            $zmb = ini_set('zend.detect_unicode', 0);
+        }
+        set_error_handler($this->includeHandler);
+        try {
+            foreach ($ids as $id) {
+                try {
+                    $file = $this->getFile($id);
+                    list($expiresAt, $values[$id]) = include $file;
+                    if ($now >= $expiresAt) {
+                        unset($values[$id]);
+                    }
+                } catch (\Exception $e) {
+                    continue;
+                }
+            }
+        } finally {
+            restore_error_handler();
+            if ($this->zendDetectUnicode) {
+                ini_set('zend.detect_unicode', $zmb);
+            }
+        }
+
+        foreach ($values as $id => $value) {
+            if ('N;' === $value) {
+                $values[$id] = null;
+            } elseif (\is_string($value) && isset($value[2]) && ':' === $value[1]) {
+                $values[$id] = parent::unserialize($value);
+            }
+        }
+
+        return $values;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return (bool) $this->doFetch([$id]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        $ok = true;
+        $data = [$lifetime ? time() + $lifetime : \PHP_INT_MAX, ''];
+        $allowCompile = 'cli' !== \PHP_SAPI || filter_var(ini_get('opcache.enable_cli'), \FILTER_VALIDATE_BOOLEAN);
+
+        foreach ($values as $key => $value) {
+            if (null === $value || \is_object($value)) {
+                $value = serialize($value);
+            } elseif (\is_array($value)) {
+                $serialized = serialize($value);
+                $unserialized = parent::unserialize($serialized);
+                // Store arrays serialized if they contain any objects or references
+                if ($unserialized !== $value || (false !== strpos($serialized, ';R:') && preg_match('/;R:[1-9]/', $serialized))) {
+                    $value = $serialized;
+                }
+            } elseif (\is_string($value)) {
+                // Serialize strings if they could be confused with serialized objects or arrays
+                if ('N;' === $value || (isset($value[2]) && ':' === $value[1])) {
+                    $value = serialize($value);
+                }
+            } elseif (!is_scalar($value)) {
+                throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable "%s" value.', $key, \gettype($value)));
+            }
+
+            $data[1] = $value;
+            $file = $this->getFile($key, true);
+            $ok = $this->write($file, '<?php return '.var_export($data, true).';') && $ok;
+
+            if ($allowCompile) {
+                @opcache_invalidate($file, true);
+            }
+        }
+
+        if (!$ok && !is_writable($this->directory)) {
+            throw new CacheException(sprintf('Cache directory is not writable (%s).', $this->directory));
+        }
+
+        return $ok;
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/ProxyTrait.php

@@ -0,0 +1,43 @@
+<?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\Cache\Traits;
+
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait ProxyTrait
+{
+    private $pool;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prune()
+    {
+        return $this->pool instanceof PruneableInterface && $this->pool->prune();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        if ($this->pool instanceof ResettableInterface) {
+            $this->pool->reset();
+        }
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/RedisProxy.php

@@ -0,0 +1,65 @@
+<?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\Cache\Traits;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class RedisProxy
+{
+    private $redis;
+    private $initializer;
+    private $ready = false;
+
+    public function __construct(\Redis $redis, \Closure $initializer)
+    {
+        $this->redis = $redis;
+        $this->initializer = $initializer;
+    }
+
+    public function __call($method, array $args)
+    {
+        $this->ready ?: $this->ready = $this->initializer->__invoke($this->redis);
+
+        return \call_user_func_array([$this->redis, $method], $args);
+    }
+
+    public function hscan($strKey, &$iIterator, $strPattern = null, $iCount = null)
+    {
+        $this->ready ?: $this->ready = $this->initializer->__invoke($this->redis);
+
+        return $this->redis->hscan($strKey, $iIterator, $strPattern, $iCount);
+    }
+
+    public function scan(&$iIterator, $strPattern = null, $iCount = null)
+    {
+        $this->ready ?: $this->ready = $this->initializer->__invoke($this->redis);
+
+        return $this->redis->scan($iIterator, $strPattern, $iCount);
+    }
+
+    public function sscan($strKey, &$iIterator, $strPattern = null, $iCount = null)
+    {
+        $this->ready ?: $this->ready = $this->initializer->__invoke($this->redis);
+
+        return $this->redis->sscan($strKey, $iIterator, $strPattern, $iCount);
+    }
+
+    public function zscan($strKey, &$iIterator, $strPattern = null, $iCount = null)
+    {
+        $this->ready ?: $this->ready = $this->initializer->__invoke($this->redis);
+
+        return $this->redis->zscan($strKey, $iIterator, $strPattern, $iCount);
+    }
+}

modules/ps_facebook/vendor/symfony/cache/Traits/RedisTrait.php

@@ -0,0 +1,382 @@
+<?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\Cache\Traits;
+
+use Predis\Connection\Aggregate\ClusterInterface;
+use Predis\Connection\Aggregate\RedisCluster;
+use Predis\Connection\Factory;
+use Predis\Response\Status;
+use Symfony\Component\Cache\Exception\CacheException;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Aurimas Niekis <aurimas@niekis.lt>
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait RedisTrait
+{
+    private static $defaultConnectionOptions = [
+        'class' => null,
+        'persistent' => 0,
+        'persistent_id' => null,
+        'timeout' => 30,
+        'read_timeout' => 0,
+        'retry_interval' => 0,
+        'lazy' => false,
+    ];
+    private $redis;
+
+    /**
+     * @param \Redis|\RedisArray|\RedisCluster|\Predis\Client $redisClient
+     */
+    private function init($redisClient, $namespace = '', $defaultLifetime = 0)
+    {
+        parent::__construct($namespace, $defaultLifetime);
+
+        if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {
+            throw new InvalidArgumentException(sprintf('RedisAdapter namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
+        }
+        if (!$redisClient instanceof \Redis && !$redisClient instanceof \RedisArray && !$redisClient instanceof \RedisCluster && !$redisClient instanceof \Predis\Client && !$redisClient instanceof RedisProxy) {
+            throw new InvalidArgumentException(sprintf('"%s()" expects parameter 1 to be Redis, RedisArray, RedisCluster or Predis\Client, "%s" given.', __METHOD__, \is_object($redisClient) ? \get_class($redisClient) : \gettype($redisClient)));
+        }
+        $this->redis = $redisClient;
+    }
+
+    /**
+     * Creates a Redis connection using a DSN configuration.
+     *
+     * Example DSN:
+     *   - redis://localhost
+     *   - redis://example.com:1234
+     *   - redis://secret@example.com/13
+     *   - redis:///var/run/redis.sock
+     *   - redis://secret@/var/run/redis.sock/13
+     *
+     * @param string $dsn
+     * @param array  $options See self::$defaultConnectionOptions
+     *
+     * @throws InvalidArgumentException when the DSN is invalid
+     *
+     * @return \Redis|\Predis\Client According to the "class" option
+     */
+    public static function createConnection($dsn, array $options = [])
+    {
+        if (0 !== strpos($dsn, 'redis://')) {
+            throw new InvalidArgumentException(sprintf('Invalid Redis DSN: "%s" does not start with "redis://".', $dsn));
+        }
+        $params = preg_replace_callback('#^redis://(?:(?:[^:@]*+:)?([^@]*+)@)?#', function ($m) use (&$auth) {
+            if (isset($m[1])) {
+                $auth = $m[1];
+            }
+
+            return 'file://';
+        }, $dsn);
+        if (false === $params = parse_url($params)) {
+            throw new InvalidArgumentException(sprintf('Invalid Redis DSN: "%s".', $dsn));
+        }
+        if (!isset($params['host']) && !isset($params['path'])) {
+            throw new InvalidArgumentException(sprintf('Invalid Redis DSN: "%s".', $dsn));
+        }
+        if (isset($params['path']) && preg_match('#/(\d+)$#', $params['path'], $m)) {
+            $params['dbindex'] = $m[1];
+            $params['path'] = substr($params['path'], 0, -\strlen($m[0]));
+        }
+        if (isset($params['host'])) {
+            $scheme = 'tcp';
+        } else {
+            $scheme = 'unix';
+        }
+        $params += [
+            'host' => isset($params['host']) ? $params['host'] : $params['path'],
+            'port' => isset($params['host']) ? 6379 : null,
+            'dbindex' => 0,
+        ];
+        if (isset($params['query'])) {
+            parse_str($params['query'], $query);
+            $params += $query;
+        }
+        $params += $options + self::$defaultConnectionOptions;
+        if (null === $params['class'] && !\extension_loaded('redis') && !class_exists(\Predis\Client::class)) {
+            throw new CacheException(sprintf('Cannot find the "redis" extension, and "predis/predis" is not installed: "%s".', $dsn));
+        }
+        $class = null === $params['class'] ? (\extension_loaded('redis') ? \Redis::class : \Predis\Client::class) : $params['class'];
+
+        if (is_a($class, \Redis::class, true)) {
+            $connect = $params['persistent'] || $params['persistent_id'] ? 'pconnect' : 'connect';
+            $redis = new $class();
+
+            $initializer = function ($redis) use ($connect, $params, $dsn, $auth) {
+                try {
+                    @$redis->{$connect}($params['host'], $params['port'], $params['timeout'], $params['persistent_id'], $params['retry_interval']);
+
+                    set_error_handler(function ($type, $msg) use (&$error) { $error = $msg; });
+                    $isConnected = $redis->isConnected();
+                    restore_error_handler();
+                    if (!$isConnected) {
+                        $error = preg_match('/^Redis::p?connect\(\): (.*)/', $error, $error) ? sprintf(' (%s)', $error[1]) : '';
+                        throw new InvalidArgumentException(sprintf('Redis connection "%s" failed: ', $dsn).$error.'.');
+                    }
+
+                    if ((null !== $auth && !$redis->auth($auth))
+                        || ($params['dbindex'] && !$redis->select($params['dbindex']))
+                        || ($params['read_timeout'] && !$redis->setOption(\Redis::OPT_READ_TIMEOUT, $params['read_timeout']))
+                    ) {
+                        $e = preg_replace('/^ERR /', '', $redis->getLastError());
+                        throw new InvalidArgumentException(sprintf('Redis connection "%s" failed: ', $dsn).$e.'.');
+                    }
+                } catch (\RedisException $e) {
+                    throw new InvalidArgumentException(sprintf('Redis connection "%s" failed: ', $dsn).$e->getMessage());
+                }
+
+                return true;
+            };
+
+            if ($params['lazy']) {
+                $redis = new RedisProxy($redis, $initializer);
+            } else {
+                $initializer($redis);
+            }
+        } elseif (is_a($class, \Predis\Client::class, true)) {
+            $params['scheme'] = $scheme;
+            $params['database'] = $params['dbindex'] ?: null;
+            $params['password'] = $auth;
+            $redis = new $class((new Factory())->create($params));
+        } elseif (class_exists($class, false)) {
+            throw new InvalidArgumentException(sprintf('"%s" is not a subclass of "Redis" or "Predis\Client".', $class));
+        } else {
+            throw new InvalidArgumentException(sprintf('Class "%s" does not exist.', $class));
+        }
+
+        return $redis;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        if (!$ids) {
+            return [];
+        }
+
+        $result = [];
+
+        if ($this->redis instanceof \Predis\Client && $this->redis->getConnection() instanceof ClusterInterface) {
+            $values = $this->pipeline(function () use ($ids) {
+                foreach ($ids as $id) {
+                    yield 'get' => [$id];
+                }
+            });
+        } else {
+            $values = $this->redis->mget($ids);
+
+            if (!\is_array($values) || \count($values) !== \count($ids)) {
+                return [];
+            }
+
+            $values = array_combine($ids, $values);
+        }
+
+        foreach ($values as $id => $v) {
+            if ($v) {
+                $result[$id] = parent::unserialize($v);
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return (bool) $this->redis->exists($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        $cleared = true;
+        $hosts = [$this->redis];
+        $evalArgs = [[$namespace], 0];
+
+        if ($this->redis instanceof \Predis\Client) {
+            $evalArgs = [0, $namespace];
+
+            $connection = $this->redis->getConnection();
+            if ($connection instanceof ClusterInterface && $connection instanceof \Traversable) {
+                $hosts = [];
+                foreach ($connection as $c) {
+                    $hosts[] = new \Predis\Client($c);
+                }
+            }
+        } elseif ($this->redis instanceof \RedisArray) {
+            $hosts = [];
+            foreach ($this->redis->_hosts() as $host) {
+                $hosts[] = $this->redis->_instance($host);
+            }
+        } elseif ($this->redis instanceof \RedisCluster) {
+            $hosts = [];
+            foreach ($this->redis->_masters() as $host) {
+                $hosts[] = $h = new \Redis();
+                $h->connect($host[0], $host[1]);
+            }
+        }
+        foreach ($hosts as $host) {
+            if (!isset($namespace[0])) {
+                $cleared = $host->flushDb() && $cleared;
+                continue;
+            }
+
+            $info = $host->info('Server');
+            $info = isset($info['Server']) ? $info['Server'] : $info;
+
+            if (!version_compare($info['redis_version'], '2.8', '>=')) {
+                // As documented in Redis documentation (http://redis.io/commands/keys) using KEYS
+                // can hang your server when it is executed against large databases (millions of items).
+                // Whenever you hit this scale, you should really consider upgrading to Redis 2.8 or above.
+                $cleared = $host->eval("local keys=redis.call('KEYS',ARGV[1]..'*') for i=1,#keys,5000 do redis.call('DEL',unpack(keys,i,math.min(i+4999,#keys))) end return 1", $evalArgs[0], $evalArgs[1]) && $cleared;
+                continue;
+            }
+
+            $cursor = null;
+            do {
+                $keys = $host instanceof \Predis\Client ? $host->scan($cursor, 'MATCH', $namespace.'*', 'COUNT', 1000) : $host->scan($cursor, $namespace.'*', 1000);
+                if (isset($keys[1]) && \is_array($keys[1])) {
+                    $cursor = $keys[0];
+                    $keys = $keys[1];
+                }
+                if ($keys) {
+                    $this->doDelete($keys);
+                }
+            } while ($cursor = (int) $cursor);
+        }
+
+        return $cleared;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        if (!$ids) {
+            return true;
+        }
+
+        if ($this->redis instanceof \Predis\Client && $this->redis->getConnection() instanceof ClusterInterface) {
+            $this->pipeline(function () use ($ids) {
+                foreach ($ids as $id) {
+                    yield 'del' => [$id];
+                }
+            })->rewind();
+        } else {
+            $this->redis->del($ids);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        $serialized = [];
+        $failed = [];
+
+        foreach ($values as $id => $value) {
+            try {
+                $serialized[$id] = serialize($value);
+            } catch (\Exception $e) {
+                $failed[] = $id;
+            }
+        }
+
+        if (!$serialized) {
+            return $failed;
+        }
+
+        $results = $this->pipeline(function () use ($serialized, $lifetime) {
+            foreach ($serialized as $id => $value) {
+                if (0 >= $lifetime) {
+                    yield 'set' => [$id, $value];
+                } else {
+                    yield 'setEx' => [$id, $lifetime, $value];
+                }
+            }
+        });
+        foreach ($results as $id => $result) {
+            if (true !== $result && (!$result instanceof Status || $result !== Status::get('OK'))) {
+                $failed[] = $id;
+            }
+        }
+
+        return $failed;
+    }
+
+    private function pipeline(\Closure $generator)
+    {
+        $ids = [];
+
+        if ($this->redis instanceof \RedisCluster || ($this->redis instanceof \Predis\Client && $this->redis->getConnection() instanceof RedisCluster)) {
+            // phpredis & predis don't support pipelining with RedisCluster
+            // see https://github.com/phpredis/phpredis/blob/develop/cluster.markdown#pipelining
+            // see https://github.com/nrk/predis/issues/267#issuecomment-123781423
+            $results = [];
+            foreach ($generator() as $command => $args) {
+                $results[] = \call_user_func_array([$this->redis, $command], $args);
+                $ids[] = $args[0];
+            }
+        } elseif ($this->redis instanceof \Predis\Client) {
+            $results = $this->redis->pipeline(function ($redis) use ($generator, &$ids) {
+                foreach ($generator() as $command => $args) {
+                    \call_user_func_array([$redis, $command], $args);
+                    $ids[] = $args[0];
+                }
+            });
+        } elseif ($this->redis instanceof \RedisArray) {
+            $connections = $results = $ids = [];
+            foreach ($generator() as $command => $args) {
+                if (!isset($connections[$h = $this->redis->_target($args[0])])) {
+                    $connections[$h] = [$this->redis->_instance($h), -1];
+                    $connections[$h][0]->multi(\Redis::PIPELINE);
+                }
+                \call_user_func_array([$connections[$h][0], $command], $args);
+                $results[] = [$h, ++$connections[$h][1]];
+                $ids[] = $args[0];
+            }
+            foreach ($connections as $h => $c) {
+                $connections[$h] = $c[0]->exec();
+            }
+            foreach ($results as $k => list($h, $c)) {
+                $results[$k] = $connections[$h][$c];
+            }
+        } else {
+            $this->redis->multi(\Redis::PIPELINE);
+            foreach ($generator() as $command => $args) {
+                \call_user_func_array([$this->redis, $command], $args);
+                $ids[] = $args[0];
+            }
+            $results = $this->redis->exec();
+        }
+
+        foreach ($ids as $k => $id) {
+            yield $id => $results[$k];
+        }
+    }
+}