To get the total number of tweets about a website on Twitter, just use this PHP code. Replace www.yourwebsite.com with any website you want:
$url = "www.yourwebsite.com";
function get_tw_shares($url)
{
$call = "http://cdn.api.twitter.com/1/urls/count.json?url=" . rawurlencode($url);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $call);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($ch);
curl_close($ch);
return json_decode($output);
}
$tw_shares = get_tw_shares($url);
$shares = $tw_shares->count;
echo $shares;