使用APC缓存PHP
. 概述:
Alternative Php Cache(APC)是php 的一个免费公开的优化代码缓存。它用来提供免费,公开并且强健的架构来缓存和优化php 的中间代码。
注:
1. 在Windows下,APC需要有一个临时路径,并且Web服务器具有可写权限。它按顺序检查TMP、TEMP、USERPROFILE环境变量,如果发现他们都没有设置,最后就使用WINDOWS目录。
2. APC不支持分布式。
II. 安装:
从pecl4win.net.php下载PECL dll包,放到PHP5/ext目录下。实际上php5.2.5对应的pecl包已经包含此文件。
III. 配置
打开php.ini,加入代码:
extension=php_apc.dll
[APC]
apc.enabled = 1
apc.shm_segments = 1
apc.shm_size = 64
apc.max_file_size = 10M
apc.stat=1
IV. 脚本测试:
重新启动Web服务器,测试:
1). 设置要缓存的条目。
store.php
$bar = 'BAR';
apc_store('foo', $bar);
?>
2). 取得缓存的条目。
fetch.php
var_dump(apc_fetch('foo'));
?>
运行store.php,然后运行fetch.php,看看效果。

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