To filter out everything which is not A-Z, a-z and 0-9 try this regex:
$str = preg_replace("#[^a-zA-Z0-9]+#is", "", $str);
On Thu, Mar 26, 2009 at 10:23 PM, <Jesse.Hazen@xxxxxxxxxxxxx> wrote:
> Hi,
>
>
>
> Brand new to regex. So I have a cli which runs a regex on users input,
> to make sure that only 0-9 and A-Z are accepted. It should strip
> everything else. My problem is that when you press control-Z (on
> Windows; I have not yet tested this on linux, and I will, but I would
> like this to be compatible with both OS's) it loops infinitely saying
> invalid data (because of the next method call, which decides what to do
> based on your input). So, here is the input code. Is there a way I can
> ensure that control commands are stripped, here?
>
>
>
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>
>
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>
>
> public function getSelection() {
>
>
>
> $choice =
> $this->validateChoice(trim(strtoupper(fgets(STDIN))));
>
> return $choice;
>
>
>
> }
>
>
>
> private function validateChoice($choice) {
>
>
>
> $choice =
> ereg_replace("/[^0-9A-Z]/","",$choice);
>
> return $choice;
>
>
>
> }
>
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>
> I have tried a ton of different things to try and fix this. Tried
> /\c.|[^0-9A-Z]/, and many variations of \c and the [^0-9A-Z], to no
> avail. I also tried using both preg_replace() as well as ereg_replace().
> I spent a lot of time on the regex section of the PHP manual, but I am
> not finding anything. Any advise on how to accomplish this?
>
>
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> Thanks,
>
>
>
> Jesse Hazen
>
>
