How would i round up to the nearest 5?

[miles_rich]

how would i round a value up to the nearest 5?

so if i had £76 it would round up to £80, but also if i had a value of £71 it would round up to £75?

i have had a look at ceil(); and round(); but these only round up to an integer.

has anyone got any ideas??

[laserlight]

Well, one method is:

function roundUp($num, $nearest) {
	$mod = $num % $nearest;
	if ($mod == 0)
		return $num;
	else
		return $num - $mod + $nearest;
}

Then use as
$num = roundUp($num, 5);

Then again, it might be more prudent to do a
$num = round($num);
before finding $mod in case $num is floating point.
The modulo operator should implicitly typecast to integer.

If you arent certain that $num (or $nearest) will always be numeric, you might even add a check with is_numeric() before doing any processing.