You know Range from PHP? so this function does same but with given dates ;)

example.php

//normal
$dates = date_range(strtotime('-1 month'), time());

//advanced, using all parameters
$dates = date_range(strtotime('-1 month'), time(),'+1 day','Y-m-d',array('date'=>0,'count'=> 0),'date');

/**
 * get an array range with dates in a specific format
 * @param  string $start      from
 * @param  string $end        to
 * @param  string $step       strtotime style
 * @param  string $format     date format
 * @param  array $array_fill default fill for the array to return
 * @param  string $d_field      the field we use to put the date into
 * @return array             
 */
function date_range($start, $end, $step = '+1 day', $format = 'Y-m-d', $array_fill = NULL, $d_field = 'date') 
{
	//return array
	$range = array();

	if (is_string($start) === TRUE) 
		$start = strtotime($start);
	if (is_string($end) === TRUE) 
		$end   = strtotime($end);

	do 
	{
		$date = date($format, $start);

		if (is_array($array_fill))
		{
			$array_fill[$d_field]  = $date;
			$range[] = $array_fill;
		}	
		else
			$range[] 	= $date;

		$start 	= strtotime($step, $start);//increase

	} while($start <= $end);

	return $range;
}