PHP 15 minute rounding

Question

In PHP I need to do a count of 15 minutes within a number of hours and minutes. But I need it to round down if less or equal to 7 minutes and round up if over 7 minutes.

So I have something like;

$totalHours = 10;
$totalMinutes = 46;

The hours is easy enough to work out the number of 15 minutes;

$totalHours = 10*4;

But the minutes is giving me some grief.

Some examples are;

If Minutes = 7 then answer is 0.

If Minutes = 8 then answer is 1.

If Minutes = 18 then answer is 1.

If Minutes = 37 then answer is 2.

If Minutes = 38 then answer is 3.

I would be really grateful if someone could do me a nice function for this. A signature of (int TotalHours, int TotalMinutes) would be great.

Thanks, Mike

Answer 1

Try this code:

<?php
echo round($n/15);
?>

// where n is your minute number ie 7, 8, 18, 37, 38 etc

Answer 2

计算分钟数（60 *小时+分钟），然后加8，除以15，并通过调用int（）截断结果。

Answer 3

To round to the nearest X: Divide by x, round to nearest int, multiply by x.

$nearest = round($minutes / 15) * 15;

But in your case, if you just want a count of that, you can simply skip the last step.

$numberOfQuarterHours = round($minutes / 15);

Answer 4

You could try modulo operation.

PHP.net MOD

Just divide by 15 and get the remaining part. There you could apply test for 7 < x < 8