How to display your average feed readers

Many bloggers are using Feedburner “chicklet” to display their subscribers count. If you want to be able to display the count for an average 7 days, here is a piece of code you’re going to love.

As usual, the first thing to do is to paste the function in your functions.php file:

function get_average_readers($feed_id,$interval = 7){
	$today = date('Y-m-d', strtotime("now"));
	$ago = date('Y-m-d', strtotime("-".$interval." days"));
	$feed_url="https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=".$feed_id."&dates=".$ago.",".$today;
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_URL, $feed_url);
	$data = curl_exec($ch);
	curl_close($ch);
	$xml = new SimpleXMLElement($data);
	$fb = $xml->feed->entry['circulation'];

	$nb = 0;
	foreach($xml->feed->children() as $circ){
		$nb += $circ['circulation'];
	}

	return round($nb/$interval);
}

Once done, you can call the function wherever you want in your theme files. Pass your Feedburner feed id as a parameter:

<?php
$nb = get_average_readers('catswhocode');
echo "I have ".$nb." RSS readers";
?>

Code initially published on Cats Who Blog.

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