Re: PHP variable sanitization functions

[Jan Pieter Kunst <jpk () akamail com>]

> Something like this (warning! untested code!) might be useful:
>
> function sane_integer($val, $min, $max)
> {
>   if (!preg_match('/^-?[0-9]+$/', $val))
>     return false;
>
>   if (($val < $min) or ($val > $max))
>     return false;
>
>   return true;
> }


Maybe this one would be faster? As it doesn't use the regular 
expression engine.

function sane_integer($val, $min, $max)
{
  if (!is_numeric($val))
    return false;

  if (($val < $min) or ($val > $max))
    return false;

  return true;
}

JP