php使用 memcache 来存储 session 方法总结_PHP教程

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

<span 1</span> <span ini_set</span>("session.save_handler", "memcache"<span ); 
</span><span 2</span> <span ini_set</span>("session.save_path", "tcp://127.0.0.1:11211");

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)

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

用 sessionid 去 memcached 里查询一下：

<?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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