wget https://pecl.php.net/get/imagick
tar xzvf imagick
cd imagick-3.4.3/
/usr/local/php7/bin/phpize
./configure --with-php-config=/usr/local/php7/bin/php-config --with-imagick=/usr/local/imagemagick
make && make install
vi /usr/local/php7/etc/php.ini
extension=imagick.so
service php-fpm7 restart