Question

I hold decimals in a database using DECIMAL(10,5)

I would like to format these numbers according to a few rules:

• A zero decimal should display as 0
• Show a long decimal (no trailing zero’s) with all of it’s numbers
• When possible, I would like to only show up to 2 decimal places (when there are trailing zeros)

Here are some examples:

• The left side corresponds to how the number is stored in database.
• The right number is how I would like to display the number in my application.

---

0.00000 => 0
0.51231 => 0.51231
0.12000 => 0.12
0.40000 => 0.40
0.67800 => 0.678
12.10000 => 12.10

Answer 1

This will work for you:

function format($x){
    if(!(int)substr_replace($x, '', $dpos = strpos($x, '.'), 1))
        return 0;
    else
        return str_pad((rtrim($x, '0')), $dpos + 3, '0'); 
}

Example