PHP check if time falls within range, questioning common solution

Question

I have to check if the current daytime falls in a specific range. I looked up the internet and found several similar solutions like this one:

$now = date("His");//or date("H:i:s")

$start = '130000';//or '13:00:00'
$end = '170000';//or '17:00:00'

if($now >= $start && $now <= $end){
echo "Time in between";
}
else{
echo "Time outside constraints";
}

If both conditions have to be true, how can this bis achieved when we assume that $start is 06:00:00 and $end is 02:00:00.

If we make the assumption that it is 01:00:00, in this case the first condition can't be true.

Has anybody an idea to handle this problem differently?

Thanks!

You mean if $end is at the next day? if so then you also have to check for the date not only the time! — Rizier123, Nov 17 '14 at 17:39

score 12 · Accepted Answer · answered Nov 17 '14 at 17:54

12

Naturally, you'd have to account for date in your comparisons.

<?php

$start = strtotime('2014-11-17 06:00:00');
$end = strtotime('2014-11-18 02:00:00');

if(time() >= $start && time() <= $end) {
  // ok
} else {
  // not ok
}

answered Nov 17 '14 at 17:54

ceejayoz

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score 5 · Answer 2 · answered Dec 27 '16 at 06:30

If you need to check whether or not the time frame rolls over midnight

    function isWithinTimeRange($start, $end){

        $now = date("His");

        // time frame rolls over midnight
        if($start > $end) {

            // if current time is past start time or before end time

            if($now >= $start || $now < $end){
                return true;
            }
        }

        // else time frame is within same day check if we are between start and end

        else if ($now >= $start && $now <= $end) {
            return true;
        }

        return false;
    }

You can then get whether or not you are within that time frame by

echo isWithinTimeRange(130000, 170000);

Cool, exactly what I needed and what my tired brain wasn't able to wrap around. I'm making timers that only have start/end time and not a full date. Thx! — brasofilo, Sep 28 '19 at 04:49

score 1 · Answer 3 · answered Oct 17 '17 at 15:19

date_default_timezone_set("Asia/Colombo");
            $nowDate = date("Y-m-d h:i:sa");
            //echo '<br>' . $nowDate;
            $start = '21:39:35';
            $end   = '25:39:35';
            $time = date("H:i:s", strtotime($nowDate));
            $this->isWithInTime($start, $end, $time);


 function isWithInTime($start,$end,$time) {

            if (($time >= $start )&& ($time <= $end)) {
               // echo 'OK';
                return TRUE;
            } else {
                //echo 'Not OK';
                return FALSE;
            }

}

score 1 · Answer 4 · answered Nov 11 '20 at 13:57

Cannot comment due to low reputation, but @DOfficial answer is great but be aware of inconsistency in comparision.

Original

 // if current time is past start time or before end time
 if($now >= $start || $now < $end){

Should be imho

 // if current time is past start time or before end time
 if($now >= $start || $now <= $end){

PHP check if time falls within range, questioning common solution

4 Answers4

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