Magento Add Product Images From Remote Url Programmatically

addImages.php

<?php 
      $product_id = 12; // Product ID
      $product = Mage::getModel('catalog/product')->load($product_id);

      $remoteImages = [
        'http://www.example.com/dummyImage.jpg',
        'http://www.example.com/dummyImage1.jpg',
        'http://www.example.com/dummyImage2.jpg'
      ];


			$product->setMediaGallery(array('images' => array(), 'values' => array())); //media gallery initialization
	                
			$i = 0;
			foreach( $remoteImages as $img){
				$i++;
        // IF YOU WANT RENAME IMAGE
				$image_url = $product->getSku().'_'.$i.'.jpg';        
				copy($img, $image_url);

				if( copy($img->fotograf, $image_url) ) {

					if( $i == 1) {
						$product->addImageToMediaGallery($image_url, array('image', 'thumbnail', 'small_image'), false, false);
					} else{
						$product->addImageToMediaGallery($image_url, null, false, false);
					}

				}

				
			}

			try{

				$product->save();
				echo $product->getSku()." ==> OK\r\n";

			} catch(Exception $e){
				print_r($e->getMessage());
			}

?>