ImagickPixelIterator::getNextIteratorRow

(PECL imagick 2, PECL imagick 3)

ImagickPixelIterator::getNextIteratorRow — Returns the next row of the pixel iterator

Description

public ImagickPixelIterator::getNextIteratorRow ( ) : array

Warning

This function is currently not documented; only its argument list is available.

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

Return Values

Returns the next row as an array of ImagickPixel objects, throwing ImagickPixelIteratorException on error.

Examples

Example #1 ImagickPixelIterator::getNextIteratorRow()

<?php
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;
}

?>

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https://www.php.net/manual/en/imagickpixeliterator.getnextiteratorrow.php