A small library for scraping all the meta data from a given URL, including open graph tags.
require_once('metadata.class.php');
$metaData = MetaData::fetch('http://www.ted.com/talks/ken_robinson_says_schools_kill_creativity.html');
// returns an associative array
var_dump($metaData->tags());
foreach ($metaData as $key => $value) {
echo "$key => $value";
}