function getDatesFromRange($start, $end){
    $dates = array($start);
    while(end($dates) < $end){
        $dates[] = date('Y-m-d', strtotime(end($dates).' +1 day'));
    }
    return $dates;
}
$time = getDatesFromRange('2014-06-12','2014-06-18');
echo "
";
echo print_r($time);
//结果
Array
(
    [0] => 2014-06-12
    [1] => 2014-06-13
    [2] => 2014-06-14
    [3] => 2014-06-15
    [4] => 2014-06-16
    [5] => 2014-06-17
    [6] => 2014-06-18
)