PHP: get number of decimal digits

Question

Is there a straightforward way of determining the number of decimal places in a(n) integer/double value in PHP? (that is, without using explode)

Answer 1

First I have found the location of the decimal using strpos function and increment the strpos postion value by 1 to skip the decimal place.

Second I have subtracted the whole string length from the value I have got from the point1.

Third I have used substr function to get all digits after the decimal.

Fourth I have used the strlen function to get length of the string after the decimal place.

This is the code that performs the steps described above:

     ";
        echo substr( $str, -(strlen($str)-(strpos($str, '.')+1)) );
        echo "
";
        echo strlen( substr( $str, -(strlen($str)-(strpos($str, '.')+1))) );
    ?>