cd /usr/local/src
wget http://pecl.php.net/get/ZendOpcache
tar xvfz zendopcache-7.x.x.tgz
cd zendopcache-7.x.x
phpize
whereis php-config 
# set the path below
./configure --with-php-config=/usr/local/bin/php-config
make
make install
# note the install path because you will use it below
vi /usr/local/lib/php.ini

zend_extension=/FULL PATH FROM ABOVE/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

service httpd restart
php -v

PHP 5.4.16 (cli) (built: Jun 18 2013 04:13:41)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies
    with Zend OPcache v7.0.2, Copyright (c) 1999-2013, by Zend Technologies