$d1 = "01 July 2005";
$d2 = date("y-m-d");
$today = strtotime($d1);
$yesday = strtotime($d2);
$datet = getdate($today);
$datey = getdate($yesday);
$t1 = $datet['yday'];
$t2 = $datey['yday'];
$average = ($t2 - $t1) + 365;