How to split float in PHP?

Question

Let's say we have 12.054 and I want to split it to three variables like $whole_number=12 $numerator=54 and $denominator=1000. Could you help me?

Answer 1

A straight-forward approach - not very academic, but it works for PHP ;-):

$float        = 12.054;
$parts        = explode('.', (string)$float);
$whole_number = $parts[0];
$numerator    = trim($parts[1], '0');
$denominator  = pow(10, strlen(rtrim($parts[1], '0')));

Some more work might be needed to ensure that edge case work too (trailing 0s, no decimal part at all, etc.).

Answer 2

Here is something to get you started , based on simple type conversions.

http://codepad.org/7ExBhTMS

However, there are many cases to consider like :

1. Preceding/trailing zeros. 12.0540 ( is 540/10000 or 54/1000 for you )

2. Handling decimals with no fractional part eg. 12.00 .

   $val = 12.054;
   print_r(splitter($val));
   
   function splitter($val)
   {
     $str = (string) $val ;
     $splitted = explode(".",$str);
     $whole = (integer)$splitted[0] ;
     $num = (integer) $splitted[1];
     $den = (integer)  pow(10,strlen($splitted[1]));
     return array('whole' => $whole, 'num' => $num,'den' => $den);
   }
   
   
   
   ?>