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php使用 memcache 回存储 session 方法总结

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Release: 2016-06-13 12:28:17
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php使用 memcache 来存储 session 方法总结

设置session用memcache来存储

方法I: 在 php.ini 中全局设置
session.save_handler = memcache
session.save_path = "tcp://127.0.0.1:11211"


方法II: 某个目录下的 .htaccess
php_value session.save_handler "memcache"
php_value session.save_path "tcp://127.0.0.1:11211"


方法III: 再或者在某个一个应用中

1 ini_set("session.save_handler", "memcache"); 2 ini_set("session.save_path", "tcp://127.0.0.1:11211");
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使用多个 memcached server 时用逗号","隔开,并且和 Memcache::addServer() 文档中说明的一样,可以带额外的参数"persistent"、"weight"、"timeout"、"retry_interval" 等等,类似这样的:"tcp://host1:port1?persistent=1&weight=2,tcp://host2:port2" 。

如果安装的PECL是memcached(依赖libmemcached库的那个扩展),则配置应为
Php代码 收藏代码
ini_set("session.save_handler", "memcached"); // 是memcached不是memcache
ini_set("session.save_path", "127.0.0.1:11211"); // 不要tcp:[/b]


代码例子(不依赖libmemcached库的那个)

复制代码
 1 <?php 2 session_start();  3 if (!isset($_SESSION['TEST'])) {  4 $_SESSION['TEST'] = time();  5 }  6  7 $_SESSION['TEST3'] = time();  8  9 print $_SESSION['TEST']; 10 print "<br><br>"; 11 print $_SESSION['TEST3']; 12 print "<br><br>"; 13 print session_id(); 14 ?>
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复制代码

 用 sessionid 去 memcached 里查询一下:

?
1
2
3
4
5
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<?php
$memcache = memcache_connect('localhost', 11211);
var_dump($memcache->get('19216821213c65cedec65b0883238c278eeb573e077'));
$memcache->set('aaaa', 'hello everyone');
var_dump($memcache->get('aaaa'));
?>

会看到
string(37) "TEST|i:1177556731;TEST3|i:1177556881;"
这样的输出,证明 session 正常工作。

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