check ImagickDraw::SetTextAlignment notes for examples and constants values
http://php.net/manual/en/function.imagickdraw-settextalignment.php
(PECL imagick 2, PECL imagick 3)
ImagickDraw::getTextAlignment — Returns the text alignment
check ImagickDraw::SetTextAlignment notes for examples and constants values
http://php.net/manual/en/function.imagickdraw-settextalignment.php