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admin/phpMyAdmin/vendor/symfony/cache/Adapter/ApcuAdapter.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\Adapter;
+
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\CacheException;
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ApcuAdapter extends AbstractAdapter
+{
+    private $marshaller;
+
+    /**
+     * @throws CacheException if APCu is not enabled
+     */
+    public function __construct(string $namespace = '', int $defaultLifetime = 0, string $version = null, MarshallerInterface $marshaller = null)
+    {
+        if (!static::isSupported()) {
+            throw new CacheException('APCu is not enabled.');
+        }
+        if ('cli' === \PHP_SAPI) {
+            ini_set('apc.use_request_time', 0);
+        }
+        parent::__construct($namespace, $defaultLifetime);
+
+        if (null !== $version) {
+            CacheItem::validateKey($version);
+
+            if (!apcu_exists($version.'@'.$namespace)) {
+                $this->doClear($namespace);
+                apcu_add($version.'@'.$namespace, null);
+            }
+        }
+
+        $this->marshaller = $marshaller;
+    }
+
+    public static function isSupported()
+    {
+        return \function_exists('apcu_fetch') && filter_var(\ini_get('apc.enabled'), \FILTER_VALIDATE_BOOLEAN);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $unserializeCallbackHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
+        try {
+            $values = [];
+            $ids = array_flip($ids);
+            foreach (apcu_fetch(array_keys($ids), $ok) ?: [] as $k => $v) {
+                if (!isset($ids[$k])) {
+                    // work around https://github.com/krakjoe/apcu/issues/247
+                    $k = key($ids);
+                }
+                unset($ids[$k]);
+
+                if (null !== $v || $ok) {
+                    $values[$k] = null !== $this->marshaller ? $this->marshaller->unmarshall($v) : $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(string $id)
+    {
+        return apcu_exists($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear(string $namespace)
+    {
+        return isset($namespace[0]) && class_exists(\APCUIterator::class, 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, int $lifetime)
+    {
+        if (null !== $this->marshaller && (!$values = $this->marshaller->marshall($values, $failed))) {
+            return $failed;
+        }
+
+        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(array_key_first($values));
+            }
+
+            throw $e;
+        }
+    }
+}