To install imagemagick with PHP imagick extension on Linux CentOS you must follow these steps: yum install ImageMagick.i386 yum install ImageMagick-devel.i386 pecl install imagick At the end of the installation, create an inclusion file for imagick.so module and restart apache: echo "extension=imagick.so" > /etc/php.d/imagick.ini /etc/init.d/httpd restart Test the correct loading of the imagick module with: php -m | grep imagick