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php-db | 2001072

Re: [PHP-DB] problem with regular expression From: billt (billt <email protected>)
Date: 07/16/01

On Mon, Jul 16, 2001 at 10:41:15AM -0300, Thomas wrote:
> ----- Mensaje original -----
> De: "Jennifer Arcino Demeterio" <eper <email protected>>
> Para: <php-db <email protected>>
> Enviado: lundi 16 juillet 2001 04:35
> Asunto: [PHP-DB] problem with regular expression
>
> i have a script to identify if the input is a combination of letters and
> numbers
>
> if (eregi("[a-zA-Z0-9][0-9]+[a-zA-Z][0-9a-zA-Z]",$fieldvalue))
> print "alphanumeric"
> } else {
> not an alphanumeric
> }
>
> my problem is, when the string ends with a number, for example hello123, it
> says "not an alpanumeric" ... it works fine when the number is placed before
> the letters or in between letters ... why is that?

the regular expression you have says:

 match any letter or number, followed by one or more numbers followed
by any letter followed by any letter or number.

hello123 fails on the 'e' (not being a number).

Something like H12345 would fail because there is no letter after the
5.

Cheers,
Bill

>
> i would really appreciate your help, thanks very much
>
> :)
>
> => sigkiller was here (PHP)
> 

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