<?php

namespace Doctrine\Common\Cache;

use const PHP_VERSION_ID;
use function apc_cache_info;
use function apc_clear_cache;
use function apc_delete;
use function apc_exists;
use function apc_fetch;
use function apc_sma_info;
use function apc_store;
/**
 * APC cache provider.
 *
 * @deprecated since version 1.6, use ApcuCache instead
 *
 * @link       www.doctrine-project.org
 */
class ApcCache extends \Doctrine\Common\Cache\CacheProvider
{
    /**
     * {@inheritdoc}
     */
    protected function doFetch($id)
    {
        return apc_fetch($id);
    }
    /**
     * {@inheritdoc}
     */
    protected function doContains($id)
    {
        return apc_exists($id);
    }
    /**
     * {@inheritdoc}
     */
    protected function doSave($id, $data, $lifeTime = 0)
    {
        return apc_store($id, $data, $lifeTime);
    }
    /**
     * {@inheritdoc}
     */
    protected function doDelete($id)
    {
        // apc_delete returns false if the id does not exist
        return apc_delete($id) || !apc_exists($id);
    }
    /**
     * {@inheritdoc}
     */
    protected function doFlush()
    {
        return apc_clear_cache() && apc_clear_cache('user');
    }
    /**
     * {@inheritdoc}
     */
    protected function doFetchMultiple(array $keys)
    {
        return apc_fetch($keys) ?: [];
    }
    /**
     * {@inheritdoc}
     */
    protected function doSaveMultiple(array $keysAndValues, $lifetime = 0)
    {
        $result = apc_store($keysAndValues, null, $lifetime);
        return empty($result);
    }
    /**
     * {@inheritdoc}
     */
    protected function doGetStats()
    {
        $info = apc_cache_info('', \true);
        $sma = apc_sma_info();
        // @TODO - Temporary fix @see https://github.com/krakjoe/apcu/pull/42
        if (PHP_VERSION_ID >= 50500) {
            $info['num_hits'] = $info['num_hits'] ?? $info['nhits'];
            $info['num_misses'] = $info['num_misses'] ?? $info['nmisses'];
            $info['start_time'] = $info['start_time'] ?? $info['stime'];
        }
        return [\Doctrine\Common\Cache\Cache::STATS_HITS => $info['num_hits'], \Doctrine\Common\Cache\Cache::STATS_MISSES => $info['num_misses'], \Doctrine\Common\Cache\Cache::STATS_UPTIME => $info['start_time'], \Doctrine\Common\Cache\Cache::STATS_MEMORY_USAGE => $info['mem_size'], \Doctrine\Common\Cache\Cache::STATS_MEMORY_AVAILABLE => $sma['avail_mem']];
    }
}
