The Imagick class
PHP Manual

Imagick::getImageChannelRange

(PECL imagick 2.2.1)

Imagick::getImageChannelRangeGets channel range

Описание

bool Imagick::getImageChannelRange ( int $channel )

Gets the range for one or more image channels. This method is available if Imagick has been compiled against ImageMagick version 6.4.0 or newer.

Параметри

channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. Defaults to Imagick::CHANNEL_DEFAULT. Refer to this list of channel constants

Връщани стойности

Returns an array containing minima and maxima values of the channel(s).

Грешки/Изключения

Хвърля ImagickException при грешка.


The Imagick class
PHP Manual