分享一篇关于php中缓存Memcache的Queue的用法,Memcache是一种缓存技术,可以提升程序的性能减轻服务器的压力,代码如下:

1. <?php
2. class MQ{
3. public static $client;
4. private static $m_real;
5. private static $m_front;
6. private static $m_data = array();
7. const QUEUE_MAX_NUM = 100000000;
8. const QUEUE_FRONT_KEY = '_queue_item_front';
9. const QUEUE_REAL_KEY = '_queue_item_real';
10. public static function setupMq($conf) {
11. self::$client = memcache_pconnect($conf);
12. self::$m_real = memcache_get(self::$client, self::QUEUE_REAL_KEY);
13. self::$m_front = memcache_get(self::$client, self::QUEUE_FRONT_KEY);
14. if (!isset(self::$m_real) || emptyempty(self::$m_real)) {
15. self::$real= 0;
16. }
17. if (!isset(self::$m_front) || emptyempty(self::$m_front)) {
18. self::$m_front = 0;
19. }
20. return self::$client;
21. }
22. public static function add($queue, $data) {
23. $result = false;
24. if (self::$m_real < self::QUEUE_MAX_NUM) {
25. if (memcache_add(self::$client, $queue.self::$m_real, $data)) {
26. self::mqRealChange();
27. $result = true;
28. }
29. }
30. return $result;
31. }
32. public static function get($key, $count) {
33. $num = 0;
34. for ($i=self::$m_front;$i<self::$m_front + $count;$i++) {
35. if ($dataTmp = memcache_get(self::$client, $key.$i)) {
36. self::$m_data[] = $dataTmp;
37. memcache_delete(self::$client, $key.$i);
38. $num++;
39. }
40. }
41. if ($num>0) {
42. self::mqFrontChange($num);
43. }
44. return self::$m_data;
45. }
46. private static function mqRealChange() {
47. memcache_add(self::$client, self::QUEUE_REAL_KEY, 0);
48. self::$m_real = memcache_increment(self::$client, self::QUEUE_REAL_KEY, 1);
49. }
50. private static function mqFrontChange($num) {
51. memcache_add(self::$client, self::QUEUE_FRONT_KEY, 0);
52. self::$m_front = memcache_increment(self::$client, self::QUEUE_FRONT_KEY, $num);
53. }
54. public static function mflush($memcache_obj) {
55. memcache_flush($memcache_obj);
56. }
57. public static function Debug() {
58. echo 'real:'.self::$m_real."<br>/r/n";
59. echo 'front:'.self::$m_front."<br>/r/n";
60. echo 'wait for process data:'.intval(self::$m_real - self::$m_front);
61. echo "<br>/r/n";
62. echo '<pre>';
63. print_r(self::$m_data);
64. echo '<pre>';
65. }
66. }
67. define('FLUSH_MQ',0);//CLEAN ALL DATA
68. define('IS_ADD',0);//SET DATA
69. //开源代码phpfensi.com
70. $mobj = MQ::setupMq('127.0.0.1','11211');
71. if (FLUSH_MQ) {
72. MQ::mflush($mobj);
73. } else {
74. if (IS_ADD) {
75. MQ::add('user_sync', '1test');
76. MQ::add('user_sync', '2test');
77. MQ::add('user_sync', '3test');
78. MQ::add('user_sync', '4test');
79. MQ::add('user_sync', '5test');
80. MQ::add('user_sync', '6test');
81. } else {
82. MQ::get('user_sync', 10);
83. }
84. }
85. MQ::Debug();
86. ?>

好了下面来看看用法,代码如下:

1. MQ::setupMq('127.0.0.1','11211');//连接
2. MQ::add($key, $value);//添加数据到队列
3. MQ::add($key, $value);//添加数据到队列
4. MQ::add($key, $value);//添加数据到队列
5. MQ::add($key, $value);//添加数据到队列
6. MQ::add($key, $value);//添加数据到队列
7. MQ::add($key, $value);//添加数据到队列
8. MQ:get($key, 10);//取出一定数量的数据