checking if a number is float in PHP

Question

This is really weird. I have this piece of code.

$rewardAmt = $amt;
if(is_float($rewardAmt)){
      print_r(\"is float\");die;
} else {
      print_r(\"is no         


        

Answer 1

Use filter_var() with FILTER_VALIDATE_FLOAT

if (filter_var($amount, FILTER_VALIDATE_FLOAT))
{
     // good
}