php memcached数据缓存入门例子

2. class mycache
3. {
4. private $cache;
5. function __construct()
6. {
7. $this->cache = new memcache();
8. // you can replace localhost by memcached server ip addr and port no.
9. $this->cache->connect('localhost', 10987);
10. } // bbs.it-home.org
12. function get_data($key)
13. {
14. $data = $this->cache->get($key);
15. if($data != null)
16. return $data;
17. else
18. {
19. if($this->cache->getresultcode() == memcached::res_notfound)
20. {
21. //do the databse query here and fetch data
22. $this->cache->set($key,$data_returned_from_database);
23. }
24. else
25. {
26. error_log('no data for key '.$key);
27. }
28. }
29. }
30. }
31. $cache = mycache();
32. $cache->get_data('foo');
33. ?>

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