PHP number: decimal point visible only if needed

Question

I\'d like to know if exists some function to automatically format a number by it\'s decimal, so if I have:

Answer 1

You could also use rtrim(), which would remove excess 0s, in the case where you might want to keep one decimal place but not the excess zeros. (For example, 4.50 becomes 4.5.) Also allows you to change the number of decimal places from 2 to any other number.

rtrim(rtrim((string)number_format($value, 2, ".", ""),"0"),".");

// 4.00 -> 4
// 4.50 -> 4.5
// 4.54000000 -> 4.54 (if you're doing more decimal places)