The Imagick::getPixelIterator() function is an inbuilt function in PHP which is used to return the image MagickPixelIterator.
Syntax:
ImagickPixelIterator Imagick::getPixelIterator( void )
Parameters:This function does not accept any parameter.
Return Value: This function returns an ImagickPixelIterator value.
Errors/Exceptions: This function throws ImagickException on error.
Below programs illustrate the Imagick::getPixelIterator() function in PHP:
Program 1:
<?php   // Create a new imagick object $imagick = new Imagick(   $imageIterator = $imagick->getPixelIterator();   // Change the color of every second pixel to green foreach ($imageIterator as $row => $pixels) {     foreach ($pixels as $column => $pixel) {         if ($column % 2) {             $pixel->setColor("green");         }     }     $imageIterator->syncIterator(); }   // Display the output header("Content-Type:image/png"); echo $imagick; ?> |
Output:
Program 2:
<?php    // Create a new imagick object $imagick = new Imagick(    $imageIterator = $imagick->getPixelIterator();    // Change the color of every second pixel to green foreach ($imageIterator as $row => $pixels) {     foreach ($pixels as $column => $pixel) {         if ($row % 2) {             $pixel->setColor("blue");         }     }     $imageIterator->syncIterator(); }    // Display the output header("Content-Type:image/png"); echo $imagick; ?> |
Output:
Reference: https://www.php.net/manual/en/imagick.getpixeliterator.php
