The “Alternative PHP Cache” (APC) is a free and open opcode cache for PHP. It was designed to provide a free framework, open and robust for caching and optimizing PHP intermediate code. It is known that APC should normally be included alternatively in php icon wink Alternative PHP Cache.<\/p>\r\n\r\n\r\n\r\n
We should use it to optimize the access of portals, and it is true that improvement is really important!<\/p>\r\n\r\n\r\n\r\n
Here is a small how-to explaining how to install an APC on Debian with php4.<\/p>\r\n\r\n\r\n\r\n
First, you need to install PEAR
apt-get install apache2
apt-get install libapache2-mod-php4
apt-get install php-pear
apt-get install php4-dev
apt-get install make
pecl install apc<\/p>\r\n\r\n\r\n\r\n
You must install the mod pre-fork as well. Otherwise apache2-prefork-dev will show an unnecessary error, “Sorry, not able to successfully run APXS. “<\/p>\r\n\r\n\r\n\r\n
You must copy the file \/ usr \/ share \/ php \/ apc.php and make it available via a web interface, eg \/ var \/ www \/ htdocs \/
And you must edit the file to include a password
vi \/ var\/www\/apache2-default\/apc.php
To change this password you must change these values:
defaults (‘ADMIN_USERNAME’, ‘user’) \/ \/ Admin Username
defaults (‘ADMIN_PASSWORD’, ‘password’) \/ \/ Admin Password \u2013 Change to Enable this..<\/p>\r\n\r\n\r\n\r\n
Then you must edit the php.ini file and add this:
extension = apc.so
apc.enabled = 1
apc.shm_segments = 1
apc.shm_size = 1024
apc.max_file_size = 1024000<\/p>\r\n\r\n\r\n\r\n
apc.enabled enable or disable APC. It is a default
apc.shm_segments is the number of memory segments to allocate for the cache. It is a default.
apc.shm_size is the size of each shared memory segment in MB. This must be paid according to the machine’s capabilities and needs.
apc.max_file_size prevents large files from being cached.<\/p>\r\n\r\n\r\n\r\n
It is possible to clear the cache by authenticating and clicking on ‘Clear Cache opcode “<\/p>\r\n\r\n\r\n\r\n
And experience greatly improved performance with an alternative PHP Cache.<\/p>\r\n\r\n\r\n\r\n