Question

Searching for a function ro round numbers to the nearest multiple of 5

22 -> 20
23 -> 25
40 -> 40
46 -> 45
48 -> 50

and so on.

Tried this which always returns the higher value:

5 * ceil($n / 5);

Answer 1

Use round() instead of ceil().

5 * round($n / 5);

ceil() rounds a floating point number up to its next integer in sequence. round() will round to the nearest integer using standard rounding rules.