آموزش نصب Zend OpCache در دایرکت ادمین

# Install "pecl" via php-pear
$ sudo apt-get install -y php-pear
# Install build dependencies
$ sudo apt-get install -y build-essential php5-dev
# Install Zend OpCache
$ sudo pecl install zendopcache-۷.۰.۲

Configure

Now that it’s installed, we need to set up its configuration. Ubuntu (and Debian?) has a convention to put all conf files in /etc/php5/conf.d, which are symlinked from /etc/php5/mods-available. Here’s how to set that up:
First, find the location of opcache.so:

$ sudo find / -name 'opcache.so'
/usr/lib/php5/۲۰۱۰۰۵۲۵/opcache.so # On my server with php 5.4

Once you have the location, you can add that to the conf file for opcache:

# Create & edit the following files:
$ sudo vim /etc/php5/mods-available/opcache.ini
# Add the following to opcache.ini
zend_extension=/usr/lib/php5/۲۰۱۰۰۵۲۵/opcache.so # File path from above
opcache.memory_consumption=۱۲۸
opcache.interned_strings_buffer=۸
opcache.max_accelerated_files=۴۰۰۰
opcache.revalidate_freq=۶۰
opcache.fast_shutdown=۱
opcache.enable_cli=۱

In case your application (or the framework it is built on) only uses annotations at development time, you can achieve even better performance by adding opcache.save_comments=0 in your PHP configuration file as well.

Now that the INI file is created, symlink it to its proper place:

$ sudo ln -s ../mods-available/opcache.ini ۲۰-opcache.ini

Lastly, I happen to be running php5-fpm with Nginx, so I need to restart the PHP service for the changes to take effect:

$ sudo service php5-fpm restart
# Alternatively: /etc/init.d/php5-fpm restart

If you’re running PHP in Apache, just give that a restart:

$ sudo service apache2 restart
# Alternatively: /etc/init.d/apache2 restart

Confirm Installed

To confirm it’s installed, run php -v, and you should get some information about Zend OpCache being installed:

$ php -v
PHP ۵.۴.۱۷RC1 (cli) (built: Jun ۲۲ ۲۰۱۳ ۱۹:۲۷:۲۶)
Copyright (c) ۱۹۹۷-۲۰۱۳ The PHP Group
Zend Engine v2.۴.۰, Copyright (c) ۱۹۹۸-۲۰۱۳ Zend Technologies
    with Zend OPcache v7.۰.۲, Copyright (c) ۱۹۹۹-۲۰۱۳, by Zend Technologies

Cleaning up

In production, you may not want the build dependencies hanging around. You can rid of the ones installed above by running:

$ sudo apt-get remove --purge build-essential php5-dev

Example Improvement!

Here’s what happened here after installing Zend OpCache on the fideloper.com server:

Resources

1. PHP 5.5 OpCache
2. Article on Installation (German)
3. Documentation