PhpRiot
Become Zend Certified

Prepare for the ZCE exam using our quizzes (web or iPad/iPhone). More info...


When you're ready get 7.5% off your exam voucher using voucher CJQNOV23 at the Zend Store

Imagick::compareImageChannels

(PECL imagick 2.0.0)

Imagick::compareImageChannelsReturns the difference in one or more images

Description

array Imagick::compareImageChannels ( Imagick $image , int $channelType , int $metricType )

Compares one or more images and returns the difference image.

Parameters

image

Imagick object containing the image to compare.

channelType

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

metricType

One of the metric type constants.

Return Values

Array consisting of new_wand and distortion.

Errors/Exceptions

Throws ImagickException on error.

PHP Manual