Problem with POST data types

First of all, you need to define what values are really valid in this case.
Then validate user input (string value if it is POSTed).
If it is valid, then convert to int.

PHP Code:

function validateRange(int $number): bool {
  return $number > 0;
}

// All outputs are `true`.
var_dump(validateRange(' 6 '));
var_dump(validateRange('6.'));
var_dump(validateRange('06'));
var_dump(validateRange('1e2')); 


https://3v4l.org/1EnTK

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