php中的memcache应用（转）

本文转自：http://www.php100.com/html/itnews/it/2013/0222/12097.html

所需环境：

php 5.3.3

apache 2.2.7

mysql 5.5.8

解压Memcached_1.2.5文档，cmd下执行memcached.exe -d -install

将php5.3_vc6_memcachedll文档解压，将php_memcache.dll文件复制到php安装目录的ext文件目录中。

然后在php.ini 当中填上这句话：extension="php_memcache.dll"

在phpinfo（）下查看，是否引用了memcache扩展。

 

测试代码：

  1.  1 <?php  
 2 //连接  
 3 $mem = new Memcache;  
 4 $mem->connect("127.0.0.1", 11211);  
 5   
 6 //保存数据  
 7 $mem->set('key1', 'This is first value', 0, 60);  
 8 $val = $mem->get('key1');  
 9 echo "Get key1 value: " . $val ."<br />";  
10   
11 //替换数据  
12 $mem->replace('key1', 'This is replace value', 0, 60);  
13 $val = $mem->get('key1');  
14 echo "Get key1 value: " . $val . "<br />";  
15   
16 //保存数组  
17 $arr = array('aaa', 'bbb', 'ccc', 'ddd');  
18 $mem->set('key2', $arr, 0, 60);  
19 $val2 = $mem->get('key2');  
20 echo "Get key2 value: ";  
21 print_r($val2);  
22 echo "<br />";  
23   
24 //删除数据  
25 $mem->delete('key1');  
26 $val = $mem->get('key1');  
27 echo "Get key1 value: " . $val . "<br />";  
28   
29 //清除所有数据  
30 $mem->flush();  
31 $val2 = $mem->get('key2');  
32 echo "Get key2 value: ";  
33 print_r($val2);  
34 echo "<br />";  
35 //关闭连接  
36 $mem->close();  
37   
38 $memcachehost = '192.168.10.1';  
39 $memcacheport = 11211;  
40 $memcachelife = 60;  
41 $memcache = new Memcache;  
42 $memcache->connect($memcachehost,$memcacheport) or die ("Could not connect");  
43 $query="select * from user limit 10";  
44 $key=md5($query);  
45 if(!$memcache->get($key))  
46 {  
47         $conn=mysql_connect("192.168.30.1","root","passwd");  
48         mysql_select_db(users);  
49         $result=mysql_query($query);  
50         while ($row=mysql_fetch_assoc($result))  
51         {  
52             $arr[]=$row;  
53         }  
54         $f = 'db';  
55         $memcache->add($key,serialize($arr),0,30);  
56         $data = $arr ;  
57 }  
58 else{  
59         $f = 'mem';  
60     $data_mem=$memcache->get($key);  
61     $data = unserialize($data_mem);  
62 }  
63 echo $f;  
64 echo "";  
65 //print_r($data);  
66 foreach($data as $a)  
67 {  
68         echo $a[user_id]._.$a[email];  
69         echo "";  
70 }  
71 ?>

     

     


 

新闻系统的应用：

    1.  1 //==============memcache  
 2 $memcachehost = '127.0.0.1';  
 3 $memcacheport = 11211;  
 4 $memcachelife = 60;  
 5 $memcache = new Memcache;  
 6 $memcache->connect($memcachehost,$memcacheport) or die ("Could not connect");  
 7 //==============新闻  
 8   
 9  $sql="SELECT id,title,left(title,16) as biaoti,date_time FROM `p_newsbase` where shenhe='1' order by id DESC limit 7 ";  
10  $query=$db->query($sql);  
11  $key=md5($query);  
12  while($row_news=$db->fetch_array($query)){  
13     $str=$row_news['biaoti'].$db->time_out($row_news['date_time']);  
14     $sm_news[]=array("name"=>$str,"title"=>$row_news['title'],"id"=>$row_news['id'],"date_time"=>$row_news['date_time']);  
15   
16  }  
17  if(!$memcache->get($key)){  
18     $memcache->add($key,serialize($sm_news),0,$memcachelife);  
19  }else{  
20     $data_mem=$memcache->get($key);  
21     $sm_news = unserialize($data_mem);  
22  }  
23  $smarty->assign("sm_news",$sm_news);

       

posted @ 2013-02-24 10:05  北方漂流  阅读(207)  评论(0)  编辑  收藏  举报