How to install and include ImageMagick on ubuntu

imagick

// update package list
sudo apt-get update

// install ImageMagick
sudo apt-get install imagick

// test if ImageMagick is working
cd /path/to/folder/with/images/ && convert  -negate  image.gif   output.gif

// install php imagick
sudo apt-get install php5-imagick

// check php extension dir for imagick.so
php-config --extension-dir

// include imagick.so extension in php.ini: extension=imagick.so

// restart server
service apache2 restart

// check if imagick is loaded
php -m 
or
php -m | grep imagick

// Viola - you've successfully installed ImageMagick!