} elseif ($useIgbinarySerialize && (!\extension_loaded('igbinary') || (\PHP_VERSION_ID >= 70400 && version_compare('3.1.6', phpversion('igbinary'), '>')))) {
            throw new CacheException(\extension_loaded('igbinary') && \PHP_VERSION_ID >= 70400 ? 'Please upgrade the "igbinary" PHP extension to v3.1.6 or higher.' : 'The "igbinary" PHP extension is not loaded.');
        }
        $this->useIgbinarySerialize = $useIgbinarySerialize;
        $this->throwOnSerializationFailure = $throwOnSerializationFailure;
    }
 
    /**
     * {@inheritdoc}
     */
    public function marshall(array $values, ?array &$failed): array
    {
        $serialized = $failed = [];
 
        foreach ($values as $id => $value) {
            try {
                if ($this->useIgbinarySerialize) {
                    $serialized[$id] = igbinary_serialize($value);
                } else {
                    $serialized[$id] = serialize($value);
                }
            } catch (\Exception $e) {
                if ($this->throwOnSerializationFailure) {
                    throw new \ValueError($e->getMessage(), 0, $e);
                }
                $failed[] = $id;
            }
        }
 
        return $serialized;
    }
 
    /**
     * {@inheritdoc}
     */
    public function unmarshall(string $value)
    {
        if ('b:0;' === $value) {
            return false;
        }

    }
 
    /**
     * Special case to deal with Fatal errors and the like.
     *
     * @return void
     */
    public function handleShutdown()
    {
        // If we reached this step, we are in shutdown handler.
        // An exception thrown in a shutdown handler will not be propagated
        // to the exception handler. Pass that information along.
        $this->canThrowExceptions = false;
 
        $error = $this->system->getLastError();
        if ($error && Misc::isLevelFatal($error['type'])) {
            // If there was a fatal error,
            // it was not handled in handleError yet.
            $this->allowQuit = false;
            $this->handleError(
                $error['type'],
                $error['message'],
                $error['file'],
                $error['line']
            );
        }
    }
 
    /**
     * @param Throwable $exception
     *
     * @return Inspector
     */
    private function getInspector($exception)
    {
        return new Inspector($exception);
    }
 
    /**
     * Resolves the giving handler.