Following on from my previous post about installing ImageMagick from source, to get it working with Apache you need to do the following. First, we need to install something from Pecl. So make sure you have the pecl command at hand – if not, install it.
apt-get install pear
Then run the following.
apt-get install php5-dev pecl install imagick
Finally, add the extension to your php.ini.
extension=imagick.so