Please can you clarify what this bug report is trying to say.

The words you have posted do not come from the manual page.

There is an example of how to use the evaluateImage image function here: http://phpimagick.com/Imagick/evaluateImage

I am requesting a new function that does what this imagemagick command does:

convert *.jpg -evaluate-sequence median median.jpg

which is not the same as imagick's evaluateImage ().

Perhaps it is hidden away somewhere in development?

>Perhaps it is hidden away somewhere

Is actually is. It's not listed as a usable function on the top of the page of: http://www.imagemagick.org/api/magick-image.php which is where I normally look, but it is listed inside the evaluateImage image function as:

MagickBooleanType MagickEvaluateImages(MagickWand *wand, const MagickEvaluateOperator operator)

It should be easy enough to add......

From the context it looks like
"MagickBooleanType MagickEvaluateImages(MagickWand *wand, const MagickEvaluateOperator operator)"

will simply apply the -evaluate operator to a series of images.

The -evaluate-sequence operator does something different. It takes a series of images and calculates the mean, max, min or median of each pixel to produce the final image. -Evaluate takes all the pixels of one image and transforms the whole image accordingly.

To incorporate -evaluate-sequence might require a new function.

I've added a function `Imagick::evaluateImages(int EVALUATE_CONSTANT) : Imagick`. 

Although the manual is not written clearly, I'm pretty certain that MagickEvaluateImages is the same function called as -evaluate-sequence  - please give it a try to see if it's working as expected.

https://pecl.php.net/package-changelog.php?package=imagick&release=3.4.0RC6

Thanks. The new function evaluateImages works very similarly to -evaluate-sequence and takes the EVALUATE_ constants. The following code has been tested with a couple of the constants to give identical results to imagemagick on the command line:

$im = new Imagick (realpath ("Waikare_E.jpg"));
$im->addImage (new Imagick (realpath ("Waikare_O.jpg")));
$im = $im->evaluateImages (imagick::EVALUATE_MAX);
$im->writeImage (getcwd (). "/test.jpg");
echo "<img src=\"test.jpg\">";
// compare with convert waikare_*.jpg -evaluate-sequence max evalseqtest.jpg

Still, don't know why anyone would use the log, power, sine or cosine constants, but I suppose that's imagemagick's problem.