Json php in a page

Hi all,

I’m trying to make this json code run in a normal page.. Does not work.. Do you know how to do it?

<?php
$json_url ="https://graph.facebook.com/6665038402";
$json = file_get_contents($json_url);
$json_output = json_decode($json);
$likes = 0;
if($json_output->likes){
	$likes = $json_output->likes;
}
echo '?=','Total likes: '.$likes;
?>
</p>

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