[Plugin: Math Comment Spam Protection] Doesn’t work with WordPress 3.0

Plugin is no longer maintained by its original author, unfortunately… You may try to replace your simple math spam protection with the Quiz plugin:

https://www.ads-software.com/extend/plugins/quiz/

— works in a similar way and if you don’t overcomplicate it, may suit you pretty well. Try it.

I just made one simple question (“The sum of 2+1?”) and one simple answer (3 or three), and that’s it…

I will see if it works well…

After some poking around, I found the problem with the Math Comment Spam Protection plugin. The fix is simple.

Hope this helps!

Er, I suppose I should post the fix here, as well.

Find Line 211 of math-comment-spam-protection.php:
if ( ( !isset($user_ID) ) && ( $comment_data['comment_type'] == ” ) ) { // Do not check if the user is registered & do not check trackbacks/pingbacks
The offending code is this:
( !isset($user_ID)
Simply change the above to this:
( ! $user_ID )
So that Line 211 looks like the following:
if ( ( ! $user_ID ) && ( $comment_data['comment_type'] == ” ) ) { // Do not check if the user is registered & do not check trackbacks/pingbacks
Voila! The Math Comment Spam Protection plugin will now work again!

Otto has suggested a better fix: use is_user_logged_in():

( ! is_user_logged_in() )

@optimiced: Thanks for your tip, maybe I’ll try it.

@chipbennett: I tried to change it into ( ! is_user_logged_in() ) and first thought, it worked. But after submitting the comment it transported me to a totally different post I didn’t want to comment. Strange!? After some test I found out that the newer version of my theme seems to cause the trouble. I reactivated the older version and now it works again.

Thanks although!