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PHP加速插件 Zend Opcache

Jun 23, 2016 pm 01:41 PM

大家知道目前PHP的缓存插件一般有三个:APC、eAccelerator、XCache,但未来它们可能都会消失,因为PHP 5.5已经集成Zend Opcache,功能和前三者相似但又有少许不同,缓存速度据说比它们更快(注意:只是据说,我没测试过)。

这几个PHP加速插 件的主要原理都相同,就是把PHP执行后的数据缓冲到内存中从而避免重复的编译过程,能够直接使用缓冲区已编译的代码从而提高速度,降低服务器负载,它们 的效率是显而易见的,像drupal这种庞大的CMS,每次打开一个页面要调用数十个PHP文件,执行数万行代码,效率可想而知,在安装APC等加速器后 打开页面的速度明显加快。

Zend Opcache 已经集成在了PHP 5.5里面,编译安装PHP5.5的时候加上--enable-opcache就行了。但也支持低版本的 PHP 5.2.*, 5.3.*, 5.4.*,未来会取消对5.2的支持,下面是我在PHP 5.4下的安装方法:

依次执行下面的命令

wget http://pecl.php.net/get/zendopcache-7.0.2.tgz tar xzf zendopcache-7.0.2.tgz cd zendopcache-7.0.2 phpize
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如果找不到phpize 的话自己找PHP路径,我的在/usr/local/php/bin/phpize,下面这行也要按你的php.ini路径自行修改

./configure --with-php-config=/usr/local/php/bin/php-config make make install
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如果显示Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-zts-20100525/ 表示安装完成,下面要修改php的配置文件让它生效

在 php.ini 的最后面加入下面几行

zend_extension=/usr/local/php/lib/php/extensions/no-debug-zts-20100525/opcache.so opcache.memory_consumption=128 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=4000 opcache.revalidate_freq=60 opcache.fast_shutdown=1 opcache.enable_cli=1
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128意思是给它分配128M内存,然后重启apache,用phpinfo查看是否生效。

看过别人的文章性能有5~9%的提升。


参考文章:

http://www.tuicool.com/articles/yY7NRf

http://www.searchtb.com/2014/02/apc-lock-php-fpm.html

http://www.bo56.com/php%E7%9A%84-zend-opcache-vs-apc-%E6%80%A7%E8%83%BD%E6%AF%94%E8%BE%83/?spm=0.0.0.0.NEWthZ

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