--- /dev/null
+<?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;
+
+/**
+ * Zend Data Cache cache driver.
+ *
+ * @license http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @link www.doctrine-project.org
+ * @since 2.0
+ * @author Ralph Schindler <ralph.schindler@zend.com>
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ */
+class ZendDataCache extends CacheProvider
+{
+ /**
+ * {@inheritdoc}
+ */
+ protected function doFetch($id)
+ {
+ return zend_shm_cache_fetch($id);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function doContains($id)
+ {
+ return (false !== zend_shm_cache_fetch($id));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function doSave($id, $data, $lifeTime = 0)
+ {
+ return zend_shm_cache_store($id, $data, $lifeTime);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function doDelete($id)
+ {
+ return zend_shm_cache_delete($id);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function doFlush()
+ {
+ $namespace = $this->getNamespace();
+ if (empty($namespace)) {
+ return zend_shm_cache_clear();
+ }
+ return zend_shm_cache_clear($namespace);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function doGetStats()
+ {
+ return null;
+ }
+}