simple regex in php, formatting decimal number

Question

I need to convert numbers to have .00 after them, but only if the number is an integer, or it has just 1 number after the decimal point, like so:

1.4 = 1.40
         


        

Answer 1

Check out PHP's built-in function number_format

You can pass it a variable and it'll format it to the correct decimal places

    $number = 20;
    if (is_int($number)) {
        $number = number_format($number, 2, '.', '');
    }