Installing APC on PHP 5.3

In a previous post I had some instructions for building PHP 5.3 on 64-bit CentOS 5. Turns out the caching extension listed there, eAccelerator, didn’t show a marked performance benefit in our benchmark testing. So instead I decided to play with APC, one of the competitors. Getting this installed was a bit tricky though (e.g., compiling statically errors out), so follow these steps:

# First build PHP as usual, since we'll be installing this as a shared extension
# Then try to get rid of any leftover header files
yum remove php-devel
# Symlink your "real" php include directory
mv  /usr/local/include/php /usr/local/include/php-previous-version
cd /usr/local/include
ln –s /path/to/new/php/source/dir php
# only the beta version of APC works on PHP 5.3; see
pecl install apc-beta
mv /usr/local/lib/php/extensions/no-debug-non-zts-20060613/ /usr/lib/php/modules
# copy the APC dashboard script to your webroot
cp /usr/local/lib/php/apc.php /path/to/your/webroot
# Add the extension in a new file /etc/php.d/apc.ini
; Enable apc extension module
apc.enable = 1

Bounce apache and then go to to see the status.


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