Gmagick extension for php install -- how and where?

The following works for me on Kubuntu 11.04. First install the development files:

sudo apt-get install libgraphicsmagick1-dev

Then install GMagick for PHP:

sudo pecl install gmagick-1.1.1RC1

Finally load the extension in PHP:

sudo sh -c 'echo "extension=gmagick.so" >> /etc/php5/apache2/php.ini'
sudo service apache2 restart