Rounding number to nearest interval

Question

So i have a predefined interval, can be 5, 10, 15, etc If someone inputs 20 i need it to round up based on the interval. So if it was a 15 minute interval, it would automatically go to 30, if it was a 45 minute interval, it would go to 45 Basically anything <= interval becomes interval anything inbetween intervals becomes the next highest interval I dont want to write some convoluted php function to do this when there may be a simple way i am just not aware of.

Accepted Answer

Rounding up would be:

```
$ceiled = $interval * ceil( $value / $interval);
```

Rounding number to nearest interval

Solution

Problem