When building an events calendar recently I needed to obtain all the dates between two dates. For others looking to do the same thing I used the code below to achieve this. Simply change the $date_from and $date_to variables to get it working for you.

// Specify the start date. This date can be any English textual format
$date_from = "2010-02-03"; 
$date_from = strtotime($date_from); // Convert date to a UNIX timestamp

// Specify the end date. This date can be any English textual format
$date_to = "2010-09-10";
$date_to = strtotime($date_to); // Convert date to a UNIX timestamp

// Loop from the start date to end date and output all dates inbetween
for ($i=$date_from; $i<=$date_to; $currentDateTS+=86400) {
	echo date("Y-m-d", $i).'<br />';
}