Creating an array of all dates between 2 specified dates [PHP]

I’ll just cut to the chase.

/**
 * create an array of all dates between two specified dates
 * @param datetime $strDateFrom
 * @param datetime $strDateTo
 * @return array
 */
function createDateRangeArray($strDateFrom, $strDateTo) {		
	$aryRange = array();
	$iDateFrom = mktime(1, 0, 0, substr($strDateFrom, 5, 2), substr($strDateFrom, 8, 2), substr($strDateFrom, 0, 4));
	$iDateTo = mktime(1, 0, 0, substr($strDateTo, 5, 2), substr($strDateTo, 8, 2), substr($strDateTo, 0, 4));
	if ($iDateTo >= $iDateFrom) {
		array_push($aryRange, date("Y-m-d", $iDateFrom));			
		while ($iDateFrom < $iDateTo) {
			$iDateFrom = $iDateFrom + 86400;
			array_push($aryRange, date("Y-m-d", $iDateFrom));
		}
	}
	return $aryRange;
}