Geo-Tagging a Picasa Photo in PHP

Assuming that $gp is a Zend_Gdata_Photos object, this will tag the $photoEntry with the specified latitude and longitude. (Note you still have to insert or update the $photoEntry.)

$gp->registerPackage('Zend_Gdata_Geo');
$gp->registerPackage('Zend_Gdata_Geo_Extension');
$where = $gp->newGeoRssWhere();
$position = $gp->newGmlPos('37.0 -122.0');
$where->point = $gp->newGmlPoint($position);
$photoEntry->setGeoRssWhere($where);

Create a public album for Picasa Web Albums

This is how to do it in .NET:

AlbumEntry newEntry = new AlbumEntry();
newEntry.Title.Text = "My New album";
newEntry.Summary.Text = "This is an album";
AlbumAccessor ac = new AlbumAccessor(newEntry);
ac.Access = "public";

This is how to do it in PHP:

$entry = new Zend_Gdata_Photos_AlbumEntry();
$entry->setTitle($gp->newTitle('title'));
$entry->setGphotoAccess($gp->newAccess("public"));
$createdEntry = $gp->insertAlbumEntry($entry);

SimpleXML and accessing MediaRSS / other namespaces

print_r($xml->getDocNamespaces());

foreach ($xml->entry as $entry)
{

  //All the media namespaced items under an entry
  $media = $entry->children("http://search.yahoo.com/mrss/%27%29;"');
  echo "Title: " . $media->group->title;
  echo "Keywords: " . $media->group->keywords;

  //There are multiple thumbnail fields, so loop through and print out
  all the attributes
  foreach($media->group->thumbnail as $thumb)
  {
    foreach ($thumb->attributes() as $a => $b)
    {
      print $a . " " . $b . "\n";
    }
  }
}