This pulls photos from Flickr using the PHP and the Zend framework.

Pull Flickr with Zend

<?php
require_once 'Zend/Loader/Autoloader.php';

// API Key
$API_Key = '[api key]';

// Register the Zend Auto Loader
$loader = Zend_Loader_Autoloader::getInstance();

// Create New Instance using the Zend REST Client
$client = new Zend_Rest_Client('http://api.flickr.com/services/rest/');

// Performa  Flickr Photo Search
$client->method('flickr.photos.search');
$client->api_key($API_Key);

// User ID
$client->user_id('66449089@N00');

 // Flickr Arguements
$client->tags("instagram app"); 
$client->per_page(50);

$result = $client->get();

foreach ($result->photos->photo as $photo)
	{
	$photoUrl = sprintf('http://farm%s.static.flickr.com/%s/%s_%s_m.jpg', $photo['farm'], $photo['server'], $photo['id'], $photo['secret']);
    $pageUrl = sprintf('http://www.flickr.com/photos/%s/%s', $photo['owner'], $photo['id']);
    //echo $photoUrl . "<br />";
	}
?>