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php3-list | 199901

Re: [PHP3] $HTTP_POST_VARS From: Harmony (harmony <email protected>)
Date: 01/09/99

On Fri, 8 Jan 1999, Rasmus Lerdorf wrote:

> > array_walk($HTTP_POST_VARS,'filter');
> >
> > The values of changed variables work only when called as:
> > $HTTP_POST_VARS[var_new_1];
> >
> > but incorrect when called directly as $var_new_1
> >
> > WHY?
>
> Because you are in a function and trying to access a global variable.
> Stick a: "global $var_new_1" at the top of the function and it will work.

Rasmus, the following is what I did. 

---
// Filter the incoming data (strip excessive spaces & remove HTML tags)
Function filter ($in_string) {
   global $HTTP_POST_VARS;   // It looks weird to put this variale as
			     // global here, but put "$in_string" global
                             // generates errors
   $in_string = trim(ereg_replace("(\n\r)+","\n\r",
              ereg_replace(" +"," ",
              ereg_replace("<[^>]*>","",$in_string))));
}

array_walk($HTTP_POST_VARS,'filter');

echo $HTTP_POST_VARS[f_name];  // with excessive spaces/newlines/HTML tags
                               // stripped
echo $f_name;                  // this remains unchanged

---

1) WHY?  What did I do wrong in this case?
2) In fact is there a better way to accomplish what I intended?
   i.e. To remove all spaces from the beginning and end of the string,
        to condense excessive spaces " +" to single space " ", and
        to strip all HTML tags
        for all user inputs

Thanks a lot again!

Regards,
harmony

> -Rasmus
> 
> 
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