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Current File : /var/www/wordpress/phpMyAdmin/vendor/symfony/cache/Traits/ApcuTrait.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\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(string $namespace, int $defaultLifetime, ?string $version)
    {
        if (!static::isSupported()) {
            throw new CacheException('APCu is not enabled');
        }
        if ('cli' === \PHP_SAPI) {
            ini_set('apc.use_request_time', 0);
        }
        parent::__construct($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)
    {
        $unserializeCallbackHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
        try {
            $values = [];
            foreach (apcu_fetch($ids, $ok) ?: [] as $k => $v) {
                if (null !== $v || $ok) {
                    $values[$k] = $v;
                }
            }

            return $values;
        } 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($id)
    {
        return apcu_exists($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 (\Throwable $e) {
            if (1 === \count($values)) {
                // Workaround https://github.com/krakjoe/apcu/issues/170
                apcu_delete(key($values));
            }

            throw $e;
        }
    }
}

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