Tuesday, December 3, 2002, 5:17:48 PM, you wrote:
TR> Hi,

TR> Tuesday, December 3, 2002, 12:12:09 PM, you wrote:
BG>> Okay, I've just solved my own problem by simply doing:

BG>> settype($input,"integer");

BG>> but.. I'm puzzled about why the following more complicated solution 
BG>> didn't work. The ASCII value for 0 is 48, and for 9 is 57.

BG>> The idea was to read a character at a time from the $rawinput string, 
BG>> check if it's within the correct range, and if so concantenate it to the 
BG>> end of the output string.

BG>> However bizarrely this seems to behave incorrectly, as it cuts out "0" 
BG>> as well. Can anyone explain why it does this?

BG>> function stripnum($rawinput)
BG>>         {

BG>>         for($x=0;$x < strlen($rawinput);$x++)
BG>>         {
BG>>                 $c = substr($rawinput,$x,1);

BG>>                 switch($c){

BG>>                         case ($c > chr(47) and $c < chr(58)):
BG>>                                 $output .=$c;
BG>>                                 break;

BG>>                         default:
BG>>                                 echo "escaped character at ".$x;
BG>>                                 break;
BG>>                 }

BG>>         }

BG>>         return $output;
BG>> }

BG>> I just can't find the bug in my code at all, and even though I found a 
BG>> better way to do it, it's annoying me that this didn't work!!!

BG>> Beth Gore
BG>> --
BG>> http://bethanoia.dyndns.org/
BG>> rss feed: http://bethanoia.dyndns.org/bethanoia.rss

TR> switch will treat 0 as false which ever way you try to dress it up :)
TR> I solved a similar problem like this:

TR> switch($c){

TR>            case (ord($c) > 47 && ord($c) < 58)?True:False:
TR>                 $output .=$c;
TR>            break;

TR>            default:
TR>                 echo "escaped character at ".$x;
TR>            break;
TR> }

TR> -- 
TR> regards,
TR> Tom

BTW you may find this runs a bit quicker

function stripnum($rawinput)
        $len =  strlen($rawinput);
        $output = '';
        for($x=0;$x < $len;$x++)


                        case (ord($rawinput[$x]) > 47 && ord($rawinput[$x]) < 
                                $output .= $rawinput[$x];

                                echo "escaped character at ".$x;


        return $output;


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