PHP中日期遍历

        $start=new DateTime('2017-02-20');        $end=new DateTime('2017-03-10');        foreach(new DatePeriod($start,new DateInterval('P1D'),$end) as $d){            /**             * @var $d DateTime             */            echo $d->format('Y-m-d')."\r\n";        }

输出
2017-02-202017-02-212017-02-222017-02-232017-02-242017-02-252017-02-262017-02-272017-02-282017-03-012017-03-022017-03-032017-03-042017-03-052017-03-062017-03-072017-03-082017-03-09