NYCPHP Meetup

[Daniel Convissor]

Hi Jeff:

On Mon, Dec 22, 2003 at 12:59:45PM -0500, Jeff Siegel wrote:
> I'm using preg_match to verify form data. I'm not sure how to handle 
> accented characters, e.g., an "e" with an accent as in Mazda Protegé. 
> Obviously the following pattern ( '/^[a-z0-9()\/\'"|&,. -]{2,55}$/i' ) 
> doesn't cut it. I had tried [[:alnum:]] but that didn't do it either.

You can add acceptable foreign character ranges in there.  Putting the 
following in would allow all foreign chars:  À-ÖØ-öø-ÿ

But, that may not come through nicely via email.  So, assuming a character 
set of ISO-8859-1:
   ORDINAL: 192-214 216-246 248-255
   HEX:     c0-d6   d8-f6   f8-ff
   OCTAL:   300-326 330-366 370-377

All of these provide coverage for case sensitive matches, so is overkill
for the case insensitive pattern you proposed, but this isn't a big deal.

You can also put the hex representations in preg using \xhh syntax (so 
"\xc0" for example) and octals in via \ddd syntax (ie: "\300").

Enjoy,

--Dan

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