Install PHP APC on a CentOS6 server environment.

After you install and configure your environment properly under CentOS LAMP 6 you want to install APC.
What you need before starting:
– PEAR
– Development of interfaces PHP, Apache & PCRE
– A C & Make tool.

If your server doesn’t have these libraries already installed use the following command to do so.

# yum install php-pear php-devel httpd-devel pcre-devel gcc make

Last, run the compilation of the APC extension.

# pecl install apc

The following questions will be asked, personally I used the defaults.

Enable internal debugging in APC [no]:
Enable per request file info about files Used From The APC cache [no]:
Enable spin locks (EXPERIMENTAL) [no]:
Enable memory protection (EXPERIMENTAL) [no]:
Enable pthread mutexes (default) [yes]:
Enable pthread read / write locks (EXPERIMENTAL) [no]:

To enable the PHP extension you should edit the php.ini configuration file and add this to the end of the file:

extension = apc.so

Restart Apache

# /etc/ini.d/httpd restart

You can check you have successfully installed APC via phpinfo().

Go to your HTTP directory

# cd /var/www/html/

Create and edit the file

# nano info.php

Paste the following lines:

<?php
phpinfo();
?>

Hit Control+X, nano will ask if you want to save the changes hit Y and hit Enter

Browse to your HTTP directory and run the file http://localhost/info.php

Also, do not hesitate to use the PHP APC administration. Here, we copy in your HTTP directory.

# cp /usr/local/lib/php/apc.php /var/www/html/apc.php

You can access this file using your browser at http://localhost/apc.php