PHP | Imagick getPixelRegionIterator() Function Last Updated : 26 Nov, 2019 Comments Improve Suggest changes Like Article Like Report The Imagick::getPixelRegionIterator() function is an inbuilt function in PHP which is used to get an ImagickPixelIterator for an image section. Syntax: ImagickPixelIterator Imagick::getPixelRegionIterator( int $x, int $y, int $columns, int $rows ) Parameters:This function accepts four parameters as mentioned above and described below: $x: It specifies the x-coordinate of the region. $y: It specifies the y-coordinate of the region. $columns: It specifies the width of the region. $rows: It specifies the height of the region. Return Value: This function returns an ImagickPixelIterator for an image section. Errors/Exceptions: This function throws ImagickException on error. Below programs illustrate the Imagick::getPixelRegionIterator() function in PHP: Program 1: php <?php // Create a new imagick object $imagick = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/20190918234528/colorize1.png'); $imageIterator = $imagick->getPixelRegionIterator(0, 0, 330, 200); // Change the color of every second pixel of region to blue foreach ($imageIterator as $row => $pixels) { foreach ($pixels as $column => $pixel) { if ($column % 2) { $pixel->setColor("blue"); } } $imageIterator->syncIterator(); } // Display the output header("Content-Type:image/png"); echo $imagick; ?> Output: Program 2: php <?php // Create a new imagick object $imagick = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/20190918234528/colorize1.png'); $imageIterator = $imagick->getPixelRegionIterator(330, 0, 338, 200); // Change the color of every second pixel of region to green foreach ($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: Reference: https://www.php.net/manual/en/imagick.getpixelregioniterator.php Comment More infoAdvertise with us Next Article PHP Syntax G gurrrung Follow Improve Article Tags : Web Technologies PHP PHP-function PHP-Imagick Similar Reads PHP Tutorial PHP is a popular, open-source scripting language mainly used in web development. 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