check ImagickDraw::SetTextAlignment notes for examples and constants values
http://php.net/manual/en/function.imagickdraw-settextalignment.php
(PECL imagick 2.0.0)
ImagickDraw::getTextAlignment — Returns the text alignment
This function is currently not documented; only its argument list is available.
Returns the alignment applied when annotating with text.
Returns one of the ALIGN_ constants and 0 if no align is set.
check ImagickDraw::SetTextAlignment notes for examples and constants values
http://php.net/manual/en/function.imagickdraw-settextalignment.php