PHP | ImagickPixelIterator newPixelRegionIterator() Function

<?php

// Create a new imagick object
$imagick = new Imagick();

// Create a image on imagick object
$imagick->newImage(800, 250, 'black');

// Create a new ImagickPixelIterator instance
$imageIterator = new ImagickPixelIterator();

// Get the pixels from a image region
$imageIterator->newPixelRegionIterator($imagick, 40, 30, 200, 200);

// Loop through pixel rows
foreach ($imageIterator as $row => $pixels) {
   
    foreach ($pixels as $column => $pixel) {

        // Set the color of each pixel
        $pixel->setColor('red');
    }

    // Sync the iterator after each iteration
    $imageIterator->syncIterator();
}
 
// Show the output
$imagick->setImageFormat('png');
header("Content-Type: image/png");
echo $imagick->getImageBlob();
?>

<?php

// Create a new imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Create a new ImagickPixelIterator instance
$imageIterator = new ImagickPixelIterator();

// Get the pixels from a image region
$imageIterator->newPixelRegionIterator($imagick, 40, 100, 1200, 20);

// Loop through pixel rows
foreach ($imageIterator as $row => $pixels) {
   
    foreach ($pixels as $column => $pixel) {

        // Set the color of each pixel
        $pixel->setColor('#62AC45');
    }

    // Sync the iterator after each iteration
    $imageIterator->syncIterator();
}
 
// Show the output
$imagick->setImageFormat('png');
header("Content-Type: image/png");
echo $imagick->getImageBlob();
?>