PHP convert decimal into fraction and back?

Question

I want the user to be able to type in a fraction like:

 1/2
 2 1/4
 3

And convert it into its corresponding decimal, to be saved in MySQL,

Answer 1

To can use PEAR's Math_Fraction class for some of your needs

toString();

// print as float
// output: 0.5
echo $fr->toFloat();

?>