$inic_timestamp=time();
$birthday_sql="0 ";
foreach ($i=0; $i<7; $i++)
	{
	$diai=date("d",$inic_timestamp);
	$mesi=date("m",$inic_timestamp);

	$birthday_sql.=" OR (DAYOFMONTH(birthdate)=$diai AND MONTH(birthdate)=$mesi)";
	$inic_timestamp=$inic_timestamp+60*60*24;
	}