PHP Check if time is between two times regardless of date

Question

I'm writing a script were I have to check if a time range is between two times, regardless of the date.

For example, I have this two dates:

$from = 23:00
$till = 07:00

I have the following time to check:

$checkFrom = 05:50 
$checkTill = 08:00

I need to create script that will return true if one f the check values is between the $from/$till range. In this example, the function should return true because $checkFrom is between the $from/$till range. But also the following should be true:

$checkFrom = 22:00
$checkTill = 23:45

Answer 1

Try this function:

function isBetween($from, $till, $input) {
    $f = DateTime::createFromFormat('!H:i', $from);
    $t = DateTime::createFromFormat('!H:i', $till);
    $i = DateTime::createFromFormat('!H:i', $input);
    if ($f > $t) $t->modify('+1 day');
    return ($f <= $i && $i <= $t) || ($f <= $i->modify('+1 day') && $i <= $t);
}

demo

Answer 2

based on 2astalavista's answer:

You need to format the time correctly, one way of doing that is using PHP's strtotime() function, this will create a unix timestamp you can use to compare.

function checkUnixTime($to, $from, $input) {
    if (strtotime($input) > strtotime($from) && strtotime($input) < strtotime($to)) {
        return true;
    }
}