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How To Display The Average Number Of Your Subscribers

a minute read

Many bloggers use Feedburner to display the number of their subscribers. If you want to be able to show the average number of them over the past 7 days, here is the code that is useful for this purpose.
As usual, first of all you need to insert this function into the functions.php file of your theme:

1 function get_average_readers($feed_id,$interval = 7){
2     $today = date('Y-m-d', strtotime("now"));
3     $ago = date('Y-m-d', strtotime("-".$interval." days"));
4     $feed_url="https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=".$feed_id."&dates=".$ago.",".$today;
5     $ch = curl_init();
6     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
7     curl_setopt($ch, CURLOPT_URL, $feed_url);
8     $data = curl_exec($ch);
9     curl_close($ch);
10     $xml = new SimpleXMLElement($data);
11     $fb = $xml->feed->entry['circulation'];
12
13     $nb = 0;
14     foreach($xml->feed->children() as $circ){
15         $nb += $circ['circulation'];
16     }
17
18     return round($nb/$interval);
19 }

Further, you can call this function anywhere on the site, but for this you need to specify id Feedburner as a parameter:

1 <?php
2 $nb = get_average_readers('wpincode');
3 echo "I have ".$nb." RSS subscribers";
4 ?>

 

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