Question

I am trying to create two select lists both filled with the same times. It’s basically for the user to select a start time and end time. I’ve calculated these as my times:

$startTime = 0; //00:00
$endTime =  86100; //23:55'
$now = $startTime;

and then I’m incrementing like this:

$now += 300; 

where 300 = 5 minutes, therefore I’m incrementing the time by 5 minutes during each loop.

Therefore, my select lists should look like this:

00:00
00:05
00:10
...
...
23:45
23:50
23:55

The whole thing works, apart from the actual times being printed. I am getting this:

1:00
1:05
...
...
00:45
00:50
00:55

I suspect the problem is the fact we are now in Daylight Saving Time here in the UK. How should I therefore tackle this problem?

This is my actual method:

public function timeSelectList()
{

    $startTime = 0; //00:00
    $endTime =  86100; //23:55'
    $now = $startTime;

    $startSelectList = '<label for="startSelect">Start Time</label><select name="startSelect" id="startSelect">';
    $endSelectList = '<label for="endSelect">End Time</label><select name="endSelect" id="endSelect">';

    while($now <= $endTime)
    {
        if($now == 61200)//17:00
        {
            $startSelectList .= '<option value="'.$now.'" selected="selected">'.date('H:i', $now).'</option>';
            $endSelectList .= '<option value="'.$now.'">'.date('H:i', $now).'</option>';
        }
        else if($now == 64800)//18:00
        {
            $startSelectList .= '<option value="'.$now.'">'.date('H:i', $now).'</option>';
            $endSelectList .= '<option value="'.$now.'" selected="selected">'.date('H:i', $now).'</option>';
        }
        else
        {
            $startSelectList .= '<option value="'.$now.'">'.date('H:i', $now).'</option>';
            $endSelectList .= '<option value="'.$now.'">'.date('H:i', $now).'</option>';
        }
        $now += 300; //increment 5 minutes (300 seconds = 5 minutes
    }

    $startSelectList .= '</select>';
    $endSelectList .= '</select>';

    return $startSelectList.$endSelectList;
}

Answer 1

Why not just write a function that will convert seconds into hours/minutes?

function secToTime($seconds = 0) {
    $hours = floor($seconds/3600);
    $minutes = floor($seconds/60)%60;
    return sprintf('%02d:%02d', $hours, $minutes);
}