[pmwiki-users] How to protect PMForm against spam?
Patrick R. Michaud
pmichaud at pobox.com
Mon Mar 3 11:12:04 CST 2008
On Mon, Mar 03, 2008 at 04:01:47PM +0100, Roman wrote:
> (:template require <field> match=-"[url=" :)
> where <field> is the input form field you want to check for "[url=".
> -"[url=" as a value of match parameter produces warning: "preg_match():
> Compilation failed: missing terminating ] for character class at offset 10
> in pmform.php on line 98"
Interesting -- that's undoubtedly a bug (perhaps even in
PmWiki!). I'll have to look into that.
> After several attempts I found this:
> 1. It looks that match parameter does not match substring but entire
> content of input field. The following works but only if href is the only
> text in <field>.
> (:template require <field> match=-href :)
(:template require <field> match="-*href*" :)
> 2. Match does not accept quotes.
> (:template require <field> match=-"href" :) does not work even if href is
> the only text of <field>.
Ah, I think that match accepts quotes but only if they
immediately follow the '=' sign. Thus the version I gave above.
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