www.gusucode.com > Flarum PHP论坛 中文版 v0.1 beta7源码程序 > FlarumChina-master/vendor/doctrine/cache/lib/Doctrine/Common/Cache/PhpFileCache.php
<?php /* * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * This software consists of voluntary contributions made by many individuals * and is licensed under the MIT license. For more information, see * <http://www.doctrine-project.org>. */ namespace Doctrine\Common\Cache; /** * Php file cache driver. * * @since 2.3 * @author Fabio B. Silva <fabio.bat.silva@gmail.com> */ class PhpFileCache extends FileCache { const EXTENSION = '.doctrinecache.php'; /** * @var callable * * This is cached in a local static variable to avoid instantiating a closure each time we need an empty handler */ private static $emptyErrorHandler; /** * {@inheritdoc} */ public function __construct($directory, $extension = self::EXTENSION, $umask = 0002) { parent::__construct($directory, $extension, $umask); self::$emptyErrorHandler = function () { }; } /** * {@inheritdoc} */ protected function doFetch($id) { $value = $this->includeFileForId($id); if ($value === null) { return false; } if ($value['lifetime'] !== 0 && $value['lifetime'] < time()) { return false; } return $value['data']; } /** * {@inheritdoc} */ protected function doContains($id) { $value = $this->includeFileForId($id); if ($value === null) { return false; } return $value['lifetime'] === 0 || $value['lifetime'] > time(); } /** * {@inheritdoc} */ protected function doSave($id, $data, $lifeTime = 0) { if ($lifeTime > 0) { $lifeTime = time() + $lifeTime; } $filename = $this->getFilename($id); $value = [ 'lifetime' => $lifeTime, 'data' => $data ]; if (is_object($data) && method_exists($data, '__set_state')) { $value = var_export($value, true); $code = sprintf('<?php return %s;', $value); } else { $value = var_export(serialize($value), true); $code = sprintf('<?php return unserialize(%s);', $value); } return $this->writeFile($filename, $code); } /** * @param string $id * * @return array|null */ private function includeFileForId(string $id) : ?array { $fileName = $this->getFilename($id); // note: error suppression is still faster than `file_exists`, `is_file` and `is_readable` set_error_handler(self::$emptyErrorHandler); $value = include $fileName; restore_error_handler(); if (! isset($value['lifetime'])) { return null; } return $value; } }