Gets channel range

Imagick::getImageChannelMean
Imagick::getImageChannelStatistics
Imagick
PHP Manual

# Imagick::getImageChannelRange

(PECL imagick 2.2.1)

Imagick::getImageChannelRange — Gets channel range

### Description

array 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.

### Parameters

`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

### Return Values

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

### Errors/Exceptions

Throws ImagickException on error.

Imagick::getImageChannelMean
Imagick::getImageChannelStatistics
Imagick
PHP Manual