Re: [PHP-LANG] [PHP] Is it possible to parse a variable by character?

I still haven't had the time to finish {} and I don't want ppl to 
"discover" that it works like [] and have them mistakenly use {} for array 
offsets.

Andi

At 07:25 PM 4/18/2001 +0900, Yasuo Ohgaki wrote:
>Someone mentioned $str[offset] will be depreciated in the future in 
>php-general.
>$str{offset} can be used to access char in string.
>
>I wonder why this is not in the manual some where obvious place.
>
>--
>Yasuo Ohgaki
>
>
>""Yasuo Ohgaki"" <[email protected]> wrote in message
>news:[email protected]...
> > It does not allow cross post to news server.... Posting again.
> >
> > [Cross post to php-lang/php-general]
> > Regular expression functions can do the job and already have reply.
> >
> > Answer for the original question: How to access string by character.
> >
> > I'm not sure if accessing string as array is going to be depreciated or 
> not.
> > (Or is it already depreciated???)
> > But you could do
> >
> > $str = 'abc';
> > for ($i = 0; $i < strlen($i); $i++) {
> >   echo $str[$i];
> > }
> >
> > It prints characters in string one by one.
> >
> > I also not sure behavior of following code is defined or not.
> > (It's used to be undefined. You probably should not rely on this.)
> >
> > $str = 'abc';
> > $str[0] = 'X';
> >
> > You may get
> > $str = 'Xbc' or $str[0] = 'X'.
> >
> > Anyone knows current status on this???
> >
> > Regards,
> > --
> > Yasuo Ohgaki
> >
> >
> > "Sean Coyle" <[email protected]> wrote in message
> > news:B70272AA.D54%[email protected]...
> > > Hey there guys,
> > >
> > >     This may seem like a dumb question, but I have to ask it anyway.
> > >
> > > I have a form in one of my php based scripts that allows for file 
> uploads.
> > > I recently noticed a potential issue if people upload files containing
> > > anything else but the standard characters ([_a-z0-9-]+(\.[_a-z0-9-]).
> > >
> > >     I am not sure if this can be done, but what I need to do is parse 
> this
> > > variable (lets call it $file_name) by character looking for anything save
> > > letters a-z (A-Z) and numbers 0-9.  Any arrangements of numbers, 
> letters and
> > > full stops (.) are to be permitted, and if any character does not 
> meet those
> > > specifications, that single character should be converted to an 
> underscore.
> > >
> > >     Any ideas on how I can go about doing something like this?
> > >
> > > BTW: (Some background info)  I examined the average validate e-mail idea,
> > > however, rather than reject the string, I would like to be able to 
> 'replace'
> > > the offending character.
> > >
> > > Thanks in advance,
> > >
> > > Sean
> > >
> > >
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