I'm aware of number_format(..) that behaves like following:
number_format(2.5, 1) // returns 2.5
number_format(2.0, 1) // returns 2.0 <-- needs to be just 2
The problem is, that I don't want .0 to be shown at all. How to format the float correctly to achieve this?
One option is to use round instead of number_format:
echo round(2.0, 1); // 2
echo round(2.5, 1); // 2.5
echo round(2.555555, 1); // 2.6
echo round(2.501, 1); // 2.5
echo round(2.1050, 1); // 2.1
Another option is to cast your number to a float after using number_format, which will eliminate any trailing zeros after the decimal point.
echo (float) number_format(2.0, 1); // 2
echo (float) number_format(2.5, 1); // 2.5
echo (float) number_format(2.555555, 1); // 2.6
echo (float) number_format(2.501, 1); // 2.5
echo (float) number_format(2.1050, 1); // 2.1
Both will give you a maximum of a single decimal place. I think round is the better option here.
Maybe using is_float? Like this number_format(2.0, is_float(2.0) ? 1 : 0)