If this is a file out of the magento core api you must include this at the top
require_once './app/Mage.php';
Mage::app('default');
$_helper = Mage::helper('catalog/output');
Mage::app('default');
$_helper = Mage::helper('catalog/output');
since we are finding the product with id rather than using the this it is frequent to use the above in the file
Getting the product id with get method
$_productId = $_GET["id"];; // product ID 10 is an actual product, and used here for a test
Create the product object with the identified id
$_product = Mage::getModel(‘catalog/product’)->load($_productId); //load the product
optionally you could get sku even for testing purpose if youd like
echo $_product->getSku();//get anything you want using the typical syntax
getting GAllery of product object rray
$galleryData = $_product->getData('media_gallery');
and the final step is which all php developer must know about for each loop to get out ech object from an object array and showing the each object image URL
<?php foreach ($_product->getMediaGalleryImages() as $_image): ?>
<div> <img style="margin-bottom:30px;" src="<?php echo (string)Mage::helper('catalog/image')->init($_product, 'image', $_image->getFile()); ?>" width="1366" height="728" />
<?php endforeach; ?>
<div> <img style="margin-bottom:30px;" src="<?php echo (string)Mage::helper('catalog/image')->init($_product, 'image', $_image->getFile()); ?>" width="1366" height="728" />
<?php endforeach; ?>
