PHP字符串格式的日期时间操作

Question

I have several shops in my system. Now i online want to show shops that are open or will open if the nowtime is before the closing time. the time strings I use are 24 hour format like "01:00" and "23:22" I came up with a code like this:

    public function willOpen($open, $closed, $nowTime) {
    $open = str_replace(":", "", $open);
    $closed = str_replace(":", "", $closed);
    $nowTime = str_replace(":", "", $nowTime);
    if ($open >= $nowTime) {
        if ($closed <= $nowTime) {
            return false;
        } else {
            return true;
        }
    }
    return false;
}

But this does not seem right because if the close time is for ex. 01:00 and the current time is 9:00 and the shop will open for ex 11:00 then this code will return false because the close time is smaler then the now time.....

what is the best approach do to this ?

Answer 1

The best way to go is using DateTime classes, as time operations is supported. So it's would be something like this:

function willOpen(Datetime $open, Datetime $closed)
{
    $nowTime = new DateTime(); # defaults to now 

    // if ($nowTime > $closed) ...
}

$open   = Datetime::createFromFormat('H:i', '01:00');
$closed = Datetime::createFromFormat('H:i', '09:00');

If closed is the next day so you could a bit like:

$closed->add(new DateInterval('P1DT12H')); # 1 day + 12 hours