Improve Php Performance in Centos By using Opcache

It known as Zend Optimizer+, Opcache, which can help to improve server and applications performance. It work by pre-compiling script byte-code in shared memory, so it help removing the need for php to load and parse scripts on each client request.

1. yum install php-opcache
2. run php -v to ensure php has this extension, will show:

1. vi /etc/php.d/10-opcache.ini
2. enable all of these by uncomment them:

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

4. service httpd restart or systemctl restart nginx