SELECT * FROM `users` WHERE  DAYOFYEAR(curdate()) <= dayofyear(`bday`) AND DAYOFYEAR(curdate()) +7 >= dayofyear(`bday`) LIMIT 30;

There is of course one small problem with this, it’s not sorted. If we sort by `bday` ASC it’ll still be off since user’s are born on different years. What we really want is to sort by month and day only. I’m sure this can be done in MySQL but here is a PHP solution to take care of it.

$sql = "SELECT * FROM `users` WHERE  DAYOFYEAR(curdate()) <= dayofyear(`bday`) AND DAYOFYEAR(curdate()) +7 >= dayofyear(`bday`) LIMIT 30;";
$query = mysql_query($sql);
$rows = mysql_num_rows($query);
if(!empty($rows)){
	while($resultFind = mysql_fetch_array($query)){
		$arr[] = array('bday' => $resultFind['bday'], 'bday2' => date("md", strtotime($resultFind['bday'])));
	}
}

function compare($x, $y) {
	if ( $x["bday2"] == $y["bday2"] )
	 return 0;
	else if ( $x["bday2"] < $y["bday2"] )
	 return -1;
	else
	 return 1;
}

usort($arr, "compare");

Using usort() we can sort based on the month and day. You now have your list sorted