creating a loop for time incremented by 15 minutes

Question

i\'m trying to make a loop that will output this:

08:00
08:15
08:30
08:45
09:00
09:15
09:30
09:45

i need it to go from 08:00 to 17:00

Answer 1

i was working on a similar problem, but with the start/end times being changeable.

this may need a little refinement, but i can't break it.

all you need to supply in the beginning are the date and times.

$day = "10/14/2011";

$startTime = date(strtotime($day." 16:00"));
$endTime = date(strtotime($day." 19:15"));

$timeDiff = round(($endTime - $startTime)/60/60);

$startHour = date("G", $startTime);
$endHour = $startHour + $timeDiff; 

for ($i=$startHour; $i <= $endHour; $i++)
{
     for ($j = 0; $j <= 45; $j+=15)
        {
                $time = $i.":".str_pad($j, 2, '0', STR_PAD_LEFT);

                echo (date(strtotime($day." ".$time)) <= $endTime) ? date("g:i", strtotime($day." ".$time))."
" : "";
        }
}

outputs:

4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 6:00 6:15 6:30 6:45 7:00 7:15