Posted by petersprc on 10/11/06 12:55

Try backslashing the single quote: $match = '/^[\'\w\.\-_?!, ]+$/';

In a single-quoted string, a literal single quote must be escaped with
a backslash. See here for string usage:

http://us2.php.net/manual/en/language.types.string.php

Mark Woodward wrote:
> Hi all,
>
> I'm trying to validate text in a HTML input field.
> How do I *allow* a single quote?
>
> // catch any nasty characters (eg !@#$%^&*()/\)
> $match = '/^['\w\.\-_?!, ]+$/';
> $valid_srch = preg_match($match, $res_description);
> if (!$valid_srch) {
> ...
> }
>
>
>
> for $match I've also tried:
>
> $match = '/^[\'\w\.\-_?!, ]+$/';
>
> $match = '/^["\w\.\-_?!, ]+$/';
>
> $match = "/^['\w\.\-_?!, ]+$/";
>
> $match = "/^[\'\w\.\-_?!, ]+$/";
>
> and numerous other strings but always ' is seen as an
> invalid character.
>
>
> thanks,
>
>
> --
> Mark

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