For your filter to return only/no digits, I would recommend doing a bit of
reading on preg_replace ( http://us2.php.net/preg_replace ) while noting the
following flags:
\d
Matches any decimal digit; this is equivalent to the class [0-9].
\D
Matches any non-digit character; this is equivalent to the class [^0-9].
ex:
preg_replace('/\d/', '', $str);
preg_replace('/\D/', '', $str);
"Todd Cary" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Chris Boget wrote:
>>> I would like to write a filter that takes the text "smith" or "SMith"
>>> and returns "Smith"; same for "ralph smith". Is the a good source on
>>> using filters this way?
>>
>> It may not be the most efficient way of accomplishing this, but you
>> could do something like:
>>
>> $string = 'SMith'
>> $fixedString = ucwords( strtolower( $string ));
>>
>> thnx,
>> Chris
>
> Thank you! I did not know about the ucwords() functions, and it does not
> need the string set to lower case.
>
> Now to create a filter that returns only numbers (e.g. "a1234z" -> "1234")
> and the same for non-numbers.
>
> Many thanks...
>
> Todd
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