Re: shortest possible check: field is set, integer or 0

Steve Edberg wrote:

Only problem with intval() is that it returns 0 (a valid value) on

I knew that. :-)

failure, so we need to check for 0 first. Adding more secure checks

do we? given that FALSE casts to 0.

would make this more than just a one-liner, eg; $_CLEAN['x'] = false; if (isset($_POST['x'])) { if (0 == 1*$_POST['x']) {

I find the 1*_POST['x'] line a bit odd. why do you bother with the '1*' ?

      $_CLEAN['x'] = 0;

} else {

      $x = intval($_POST['x']);
      if ($x > 0 && $x == 1*$_POST['x']) {

this is wrong ... if $_POST['x'] is '5.5' this won't fly but is valid according to the OP.

         $_CLEAN['x'] = $x;
      }

} } Reducing to a two-liner, if you *really* want: $x = intval(@$_POST['x']); $_CLEAN['x'] = (isset($_POST['x']) ? ((0 == 1*$_POST['x']) ? 0 : (($x > 0 && $x == 1*$_POST['x']) ? $x : false)) : false); (all untested) That *should* return false unless all your conditions are set, in which case it will return your cardinal number (non-negative integer). Disclaimer: Currently operating on caffeine deficit; it's possible I'm answering a question no one asked.

now that is funny :-)