Re: Re: Simple validation problem

I wonder how that can be enough, if you consider the following form, you can enter "45-98" and it will print ok !! Since all http is coming as a string, I beleive the only way is to test for invalid characters as anything except [0-9] and the dot. (wich is my problem because I do not really know how) I event try with casting amount like this: $amount = (float)($amount); It does not work, I can still input "12r5" for exemple. py if( $amount >0 ){ print "ok"; }else print "smaller than 0: error"; if( is_float( $amount )){ print "ok"; }else print "not a float: error"; ?> <FORM ACTION="<? print $PHP_SELF ?>" METHOD="post"> <INPUT TYPE="Text" NAME="amount" SIZE="4"> <INPUT TYPE="Submit" NAME="Submit" VALUE="Submit"> </FORM> ----- Original Message ----- From: CC Zona <cczona@nospam.invalid> To: <php-general@lists.php.net> Sent: Wednesday, July 18, 2001 10:15 PM Subject: [PHP] Re: Simple validation problem > In article <00ef01c10fa5$fd20f2e0$e064fea9@py>, pylem@sympatico.ca (Py) > wrote: > > > I am trying to make shure the amount is positive > > if($amount >0) > {...} > > > and is a float > > if(is_float($amount)) > {...} > > -- > CC > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net > >