Imagick::previewImages

(PECL imagick 2, PECL imagick 3)

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

說明

public 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.

參數(shù)

preview

Preview type. See Preview type constants

返回值

成功時返回 true。

錯誤／異常

錯誤時拋出 ImagickException。