Non testata ma + o - è così
Codice PHP:
$host = "";
$dbuser = "";
$dbpassword = "";
$dbname = "";
$con = mysql_connect($host,$dbuser,$dbpassword);
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db($dbname, $con);
$query = "SELECT COUNT(ID) AS conteggio FROM wp_post WHERE post_date=DATE(NOW())";
$result = mysql_query($query) or die(mysql_error());
$row = mysql_fetch_array($result);
echo $row['conteggio'];