<?php

#Bring the multiple API call XMLs into the environment.
$call1 = simplexml_load_file("http://api.flickr.com/services/rest/?&method=flickr.photosets.getPhotos&api_key=[your flickr API key]&photoset_id=[the photoset ID]");
$call2 = simplexml_load_file("http://api.flickr.com/services/rest/?&method=flickr.photosets.getPhotos&api_key=[your flickr API key]&photoset_id=[the photoset ID]");
$calln = simplexml_load_file("http://api.flickr.com/services/rest/?&method=flickr.photosets.getPhotos&api_key=[your flickr API key]&photoset_id=[the photoset ID]");

#Create the atom feed
echo "<?xml version='1.0' encoding='utf-8' ?> \n";
echo "<feed xml:lang='en-US' xmlns='http://www.w3.org/2005/Atom'> \n";
echo "<title>";
echo "Misc";
echo "</title> \n";
echo "<link href='http://greg.mcmull.in' rel='self'/> \n";
echo "<author>";
echo "<name>Greg McMullin</name> \n";
echo "<email>greg@mcmcull.in</email> \n";
echo "</author> \n";

#use the function defined below to create the atom entries for each of the photos in the API call XMLs
writeEntries($call1);
writeEntries($call2);
writeEntries($calln);

echo "</feed>";

#Create an function to make an entry for each photo returned by the multipe API calls
function writeEntries($whatever){
   foreach ($whatever->photoset as $photos) {
      foreach ($photos->photo as $photo) {
         echo "<entry>";
         echo "<title>";
         echo htmlentities($photo["title"]);
         echo "</title>";
         echo "<link rel='enclosure' type='image/jpeg' href='http://farm{$photo["farm"]}.static.flickr.com/{$photo["server"]}/{$photo["id"]}_{$photo["secret"]}_b.jpg' />";
         echo "</entry> \n";
      };
   }
}

?>