In this guide you must be comfortable in editing your server using SSH. At Carbon Hosting we like to use WINSCP & Putty to log into the server to edit files and run commands.
Zend OPcache is a PHP accelerator that provides faster PHP execution through opcode caching and optimization, it is now the default PHP accelerator in PHP5.5 but you can still install it in PHP5.4
Log into your server using Putty, and copy and paste the following commands
cd /usr/local/src wget http://pecl.php.net/get/ZendOpcache tar xvfz ZendOpcache cd ZendOpcache phpize whereis php-config NOTE: the path /usr/local/bin/php-config is displayed. ./configure --with-php-config=/usr/local/bin/php-config make make install NOTE:the install path it should be like this /usr/local/lib/php/extensions/no-debug-non-zts-20100525/
Using WINSCP edit /usr/local/lib/php.ini
SEARCH ; Directory in which the loadable extensions (modules) reside.
Paste the path from the above step.
zend_extension = "/usr/local/lib/php/extensions/no-debug-non-zts-20100525/opcache.so"
Then paste the following code at the bottom of the file so you can easily find it
[OPCACHE] opcache.enable=1 opcache.enable_cli=1 opcache.memory_consumption=128 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=4000 opcache.revalidate_freq=60 opcache.fast_shutdown=1
Save the file.
Use Putty for the Magic to happen!
service httpd restart php -v
You should get the following message.
PHP 5.4.38 (cli) (built: Mar 16 2015 10:36:07) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies with the ionCube PHP Loader v4.6.1, Copyright (c) 2002-2014, by ionCube Ltd., and with Zend OPcache v7.0.4, Copyright (c) 1999-2014, by Zend Technologies with Zend Guard Loader v3.3, Copyright (c) 1998-2013, by Zend Technologies
If you get a problem make sure your path to zend_extension = is correct. If this is incorrect you will get the following message and result in a 500 server error.
Failed loading opcache.so: opcache.so: cannot open shared object file
Or if you want to disable Zend Opcache , comment out using a ; as shown below in php.ini
;zend_extension = "/usr/local/lib/php/extensions/no-debug-non-zts-20100525/opcache.so"
Run the restart command again
service httpd restart php -v
So you have followed my instructions for installing and configuring PHP Zend OPcache, Now you need to check that its actual working. So how do you check if Zend OPcache is working/caching?
Install AMNUTS Opcache GUI
https://github.com/amnuts/opcache-gui
To use git is really easy. In putty go to the directory of public_html.
yum install git git clone https://github.com/amnuts/opcache-gui.git
This command will now clone the opcache-gui to your public_html/opcache-gui folder, but be aware that you will need to password protect this directory.
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