(PECL imagick 2, PECL imagick 3)
Imagick::getImagePage — Returns the page geometry
Returns the page geometry associated with the image in an array with the keys "width", "height", "x", and "y".
Returns the page geometry associated with the image in an array with the keys "width", "height", "x", and "y".
错误时抛出 ImagickException。