When I'm trying to compare two numbers, some times I get not expected results.  Specially with float precision numbers.

In my case:

$value1 = 58.6;
$value2 = 58.6;

if ($value1 > $value2) {
  // PHP Bug!
  // This expresion seems to be true for some reason
  // The expected result is false, isn't it??
}

This happens comparing the numbers as floats or as strings.

It is important to say that $value1 is a value entered by the user into a form input (a validation number) and $value2 is the addition of several fields and such addition must be equal to $value1 in order to be accepted by the application.


I hope this is clear enough for you.


-William