Returns the next row as an array of pixel wands from the pixel iterator.

Image
Returns the next row as an array of pixel wands from the pixel iterator.
function getNextIteratorRow($imagePath)
{
    $imagick = new \Imagick(realpath($imagePath));
    $imageIterator = $imagick->getPixelIterator();

    $count = 0;
    while (($pixels = $imageIterator->getNextIteratorRow())) {
        if (($count % 3) == 0) {
            /* Loop through the pixels in the row (columns) */
            foreach ($pixels as $column => $pixel) {
                /** @var $pixel \ImagickPixel */
                if ($column % 2) {
                    /* Paint every second pixel black*/
                    $pixel->setColor("rgba(0, 0, 0, 0)");
                }
            }
            /* Sync the iterator, this is important to do on each iteration */
            $imageIterator->syncIterator();
        }

        $count += 1;
    }

    header("Content-Type: image/jpg");
    echo $imagick;
}