Character Validation

[Shawazi]

Can anyone explain why PHP preg_match would differ from Javascript's .match() ? I had a ridiculous validation using hex

\w\\d\\pL\xC0-\xD6\xD8-\xF6\xF8-\xFF

This would allow an upsidedown ! (for Spanish) in JS, but disallow in PHP.

[nrg_alpha]

I'm confused by some additional slashes.. between \w and \d you have an extra slash?

Is this a sequence you are looking for? (À-ÖØ-öø-ÿ) or are you just checking to see if those characters are in the match? If the latter's the case, then you can simply use a character class.

[\w\d\xC0\xD6\xD8\xF6\xF8\xFF]

I think you can use \xA1 for upside down ! character (this is for latin-1..Unicode hex = 00A1).