php中memcache的运用

 1 <?php
 2 /**
 3  * •Memcache::add — 增加一个条目到缓存服务器
 4  * •Memcache::addServer — 向连接池中添加一个memcache服务器
 5  * •Memcache::close — 关闭memcache连接
 6  * •Memcache::delete — 从服务端删除一个元素
 7  * •Memcache::get — 从服务端检回一个元素
 8  * •Memcache::set — 在服务器上存储数据
 9  * •Memcache::flush — 清洗（删除）已经存储的所有的元素
10  * •Memcache::getStats — 获取服务器统计信息
11  * •Memcache::pconnect — 打开一个到服务器的持久化连接
12  * •Memcache::replace — 替换已经存在的元素的值
13  * 使用MEMCACHE_COMPRESSED标记对数据进行压缩(使用zlib)。
14  * •Memcache::connect — 打开一个memcached服务端连接
15  * 同一个项目安装两次,key要有前缀
16  * memcache安全(不让别人访问)
17  * 内网,设置防火墙,
18  * Iptables -A INPUT -p tcp 192.168.1.111 -dport 11211 -j ACCEPT
19  * Iptables -A INPUT -p ucp 192.168.1.111 -dport 11211 -j ACCEPT
20  */
21 $men=new Memcache; //实例化一个memcache类
22 //var_dump($men); // 返回一个对象 object(Memcache)[1]
23 $men->addServer(‘127.0.0.1‘,11211);
24 $men->add(‘mytest‘,‘today is tuesday‘); //往memcache中写入数据
25 $men->set(‘mytest‘,‘22today is tuesday‘); //覆盖掉了原来同名的键值
26 $str=$men->get(‘mytest‘);  //从memcache中读出数据
27 $men->add(‘mytest2‘,‘today is tuesday喔喔‘); //往memcache中写入数据
28 $men->add(‘myarray‘,array(‘aaa‘,‘bbb‘,‘ccc‘,‘ddd‘));
29 $rs2=$men->get(‘mytest2‘);
30 $rs4=$men->get(‘myarray‘);
31 echo $rs2; //today is tuesday喔喔
32 $men->replace(‘mytest2‘,‘today is tuesday喔喔2222‘);
33 $rs3=$men->get(‘mytest2‘);
34 echo $rs3; //today is tuesday喔喔2222
35 var_dump($rs4);
36 /**
37  * array (size=4)
38   0 => string ‘aaa‘ (length=3)
39   1 => string ‘bbb‘ (length=3)
40   2 => string ‘ccc‘ (length=3)
41   3 => string ‘ddd‘ (length=3)
42  */
43 //echo $str; //today is tuesday  22today is tuesday
44 $rs=$men->getStats();
45 //var_dump($rs);
46 /**
47  * array (size=20)
48   ‘pid‘ => string ‘1984‘ (length=4)
49   ‘uptime‘ => string ‘1474‘ (length=4)
50   ‘time‘ => string ‘1427158094‘ (length=10)
51   ‘version‘ => string ‘1.2.6‘ (length=5)
52   ‘pointer_size‘ => string ‘32‘ (length=2)
53   ‘curr_items‘ => string ‘2‘ (length=1)
54   ‘total_items‘ => string ‘15‘ (length=2)
55   ‘bytes‘ => string ‘153‘ (length=3)
56   ‘curr_connections‘ => string ‘4‘ (length=1)
57   ‘total_connections‘ => string ‘5‘ (length=1)
58   ‘connection_structures‘ => string ‘5‘ (length=1)
59   ‘cmd_get‘ => string ‘30‘ (length=2)
60   ‘cmd_set‘ => string ‘58‘ (length=2)
61   ‘get_hits‘ => string ‘30‘ (length=2)
62   ‘get_misses‘ => string ‘0‘ (length=1)
63   ‘evictions‘ => string ‘0‘ (length=1)
64   ‘bytes_read‘ => string ‘2697‘ (length=4)
65   ‘bytes_written‘ => string ‘3681‘ (length=4)
66   ‘limit_maxbytes‘ => string ‘67108864‘ (length=8)
67   ‘threads‘ => string ‘1‘ (length=1)
68  */
69
70 class Person{
71     var $name=‘zhangsan‘;
72     var $age=10;
73 }
74 $men->add(‘myobj‘,new Person);
75 $myobj=$men->get(‘myobj‘);
76 var_dump($myobj);
77 /**
78  * object(Person)[2]
79    public ‘name‘ => string ‘zhangsan‘ (length=8)
80    public ‘age‘ => int 10
81  */
82 echo $men->getVersion(); //1.2.6  版本号
83 $men->close();
84 ?>