Round to nearest 50

[johnsmith153]

I use:

sprintf("%01.2f", $value);

 

to display 3 as £3.00, and 1.7 as £1.70 etc.

 

How would I round to the nearest 50p - so £1.70 = £1.50, £1.80 = £2.00 etc?

 

Very simple if you know how!

[MadTechie]

<?php
function ceiling($number, $significance = 1)
{
return ( is_numeric($number) && is_numeric($significance) ) ? (ceil($number/$significance)*$significance) : false;
}
echo ceiling(1.3, 0.5);  // 1.5
echo ceiling(1.7, 0.5);  // 2

 

Use your own formatting to format it

 

Hope this helps

[johnsmith153]

Great. Thanks.

 

However, I need to round it to the nearest.

 

So 1.7 would be 1.5 and 1.2 would be 1 - the script shown would round up to 2/1.5.

 

Any chance of showing where I would change the script?

 

Thanks!

[MadTechie]

Sure

function flooring($number, $significance = 1)
{
return ( is_numeric($number) && is_numeric($significance) ) ? (floor($number/$significance)*$significance) : false;
}
echo flooring(1.3, 0.5);  // 1
echo flooring(1.7, 0.5);  // 1.5

 

put in a simple inline code it would be

$value = 1.7;
echo sprintf("%01.2f", floor($value/0.5)*0.5);

[johnsmith153]

Again, sorry this isn't right.

 

The first example rounds everything up, the second example rounds everything down.

 

I need it to round to the 'nearest'.

 

So 1.7 would be closer to 1.5 than 2, so would return 1.5.

 

1.8 would be closer to 2 than 1.5, so would return 2.

[Psycho]

I think this is what you are after. It will round to the nearest value according to the $roundTo value passed

 

function roundToPartial($value, $roundTo)
{
    return round($value / $roundTo) * $roundTo;
}

echo roundToPartial(1.70, .5); //1.5
echo roundToPartial(1.80, .5); //2.0

[johnsmith153]

Perfect. Thanks.