5 * A PHP-Based RSS and Atom Feed Framework.
6 * Takes the hard work out of managing a complete RSS/Atom solution.
8 * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
11 * Redistribution and use in source and binary forms, with or without modification, are
12 * permitted provided that the following conditions are met:
14 * * Redistributions of source code must retain the above copyright notice, this list of
15 * conditions and the following disclaimer.
17 * * Redistributions in binary form must reproduce the above copyright notice, this list
18 * of conditions and the following disclaimer in the documentation and/or other materials
19 * provided with the distribution.
21 * * Neither the name of the SimplePie Team nor the names of its contributors may be used
22 * to endorse or promote products derived from this software without specific prior
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
26 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
27 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
28 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
37 * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
39 * @author Geoffrey Sneddon
41 * @link http://simplepie.org/ SimplePie
42 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
46 * Caches data to memcache
48 * Registered for URLs with the "memcache" protocol
50 * For example, `memcache://localhost:11211/?timeout=3600&prefix=sp_` will
51 * connect to memcache on `localhost` on port 11211. All tables will be
52 * prefixed with `sp_` and data will expire after 3600 seconds
58 class SimplePie_Cache_Memcache implements SimplePie_Cache_Base
82 * Create a new cache object
84 * @param string $location Location string (from SimplePie::$cache_location)
85 * @param string $name Unique ID for the cache
86 * @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
88 public function __construct($location, $name, $type)
90 $this->options = array(
91 'host' => '127.0.0.1',
94 'timeout' => 3600, // one hour
95 'prefix' => 'simplepie_',
98 $parsed = SimplePie_Cache::parse_URL($location);
99 $this->options['host'] = empty($parsed['host']) ? $this->options['host'] : $parsed['host'];
100 $this->options['port'] = empty($parsed['port']) ? $this->options['port'] : $parsed['port'];
101 $this->options['extras'] = array_merge($this->options['extras'], $parsed['extras']);
102 $this->name = $this->options['extras']['prefix'] . md5("$name:$type");
104 $this->cache = new Memcache();
105 $this->cache->addServer($this->options['host'], (int) $this->options['port']);
109 * Save data to the cache
111 * @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
112 * @return bool Successfulness
114 public function save($data)
116 if ($data instanceof SimplePie)
120 return $this->cache->set($this->name, serialize($data), MEMCACHE_COMPRESSED, (int) $this->options['extras']['timeout']);
124 * Retrieve the data saved to the cache
126 * @return array Data for SimplePie::$data
128 public function load()
130 $data = $this->cache->get($this->name);
134 return unserialize($data);
140 * Retrieve the last modified time for the cache
142 * @return int Timestamp
144 public function mtime()
146 $data = $this->cache->get($this->name);
150 // essentially ignore the mtime because Memcache expires on it's own
158 * Set the last modified time to the current time
160 * @return bool Success status
162 public function touch()
164 $data = $this->cache->get($this->name);
168 return $this->cache->set($this->name, $data, MEMCACHE_COMPRESSED, (int) $this->duration);
177 * @return bool Success status
179 public function unlink()
181 return $this->cache->delete($this->name, 0);