Imagick::previewImages

(PECL imagick 2.0.0)

Imagick::previewImages — Quickly pin-point appropriate parameters for image processing

˵��

Imagick::previewImages ( int $preview ) : bool

Tiles 9 thumbnails of the specified image with an image processing operation applied at varying strengths. This is helpful to quickly pin-point an appropriate parameter for an image processing operation.

����

preview

Preview type. See Preview type constants

����ֵ

�ɹ�ʱ���� TRUE��

�����쳣

����ʱ�׳� ImagickException��