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-rw-r--r--library/Smarty/demo/plugins/cacheresource.memcache.php91
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diff --git a/library/Smarty/demo/plugins/cacheresource.memcache.php b/library/Smarty/demo/plugins/cacheresource.memcache.php
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+<?php
+
+/**
+ * Memcache CacheResource
+ *
+ * CacheResource Implementation based on the KeyValueStore API to use
+ * memcache as the storage resource for Smarty's output caching.
+ *
+ * Note that memcache has a limitation of 256 characters per cache-key.
+ * To avoid complications all cache-keys are translated to a sha1 hash.
+ *
+ * @package CacheResource-examples
+ * @author Rodney Rehm
+ */
+class Smarty_CacheResource_Memcache extends Smarty_CacheResource_KeyValueStore {
+ /**
+ * memcache instance
+ * @var Memcache
+ */
+ protected $memcache = null;
+
+ public function __construct()
+ {
+ $this->memcache = new Memcache();
+ $this->memcache->addServer( '127.0.0.1', 11211 );
+ }
+
+ /**
+ * Read values for a set of keys from cache
+ *
+ * @param array $keys list of keys to fetch
+ * @return array list of values with the given keys used as indexes
+ * @return boolean true on success, false on failure
+ */
+ protected function read(array $keys)
+ {
+ $_keys = $lookup = array();
+ foreach ($keys as $k) {
+ $_k = sha1($k);
+ $_keys[] = $_k;
+ $lookup[$_k] = $k;
+ }
+ $_res = array();
+ $res = $this->memcache->get($_keys);
+ foreach ($res as $k => $v) {
+ $_res[$lookup[$k]] = $v;
+ }
+ return $_res;
+ }
+
+ /**
+ * Save values for a set of keys to cache
+ *
+ * @param array $keys list of values to save
+ * @param int $expire expiration time
+ * @return boolean true on success, false on failure
+ */
+ protected function write(array $keys, $expire=null)
+ {
+ foreach ($keys as $k => $v) {
+ $k = sha1($k);
+ $this->memcache->set($k, $v, 0, $expire);
+ }
+ return true;
+ }
+
+ /**
+ * Remove values from cache
+ *
+ * @param array $keys list of keys to delete
+ * @return boolean true on success, false on failure
+ */
+ protected function delete(array $keys)
+ {
+ foreach ($keys as $k) {
+ $k = sha1($k);
+ $this->memcache->delete($k);
+ }
+ return true;
+ }
+
+ /**
+ * Remove *all* values from cache
+ *
+ * @return boolean true on success, false on failure
+ */
+ protected function purge()
+ {
+ return $this->memcache->flush();
+ }
+}