Imagick::previewImages()

(PECL imagick 2.0.0)

Quickly pin-point appropriate parameters for image processing

说明

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.

参数

$preview

Preview type. See Preview type constants

返回值

成功时返回TRUE。

错误／异常

错误时抛出 ImagickException。