Addition - HTML Forums

Novus Mortuus · 05-14-2008, 04:12 PM

I just cannot work this out.

I'm trying to update a table in my database every time someone posts on the forum, and add 1 to the field user_forum_posts

I can't/don't want to use a auto increment, because that wouldn't work, as there is more than 1 user and it would..well it wouldn't work, i'm sure you can see why.

I've been through loads of MySQL references, and the cloesest i can find is a Mathematical Function of + but i can't work out how to use it

I've tried:

PHP Code:


			
UPDATE  `***`.`user_info` SET  `user_forum_posts` +1 WHERE  `user_info`.`user_id` =2 LIMIT 1 ;

PHP Code:


			
UPDATE  `***`.`user_info` SET  `user_forum_posts` + '1' WHERE  `user_info`.`user_id` =2 LIMIT 1 ;

PHP Code:


			
UPDATE  `***`.`user_info` SET  `user_forum_posts` = +1 WHERE  `user_info`.`user_id` =2 LIMIT 1 ;

PHP Code:


			
UPDATE  `***`.`user_info` SET  `user_forum_posts` = SUM(+1) WHERE  `user_info`.`user_id` =2 LIMIT 1 ;

etc....

putts · 05-15-2008, 08:43 AM

it should be something like this....

UPDATE user_info SET user_forum_posts = user_forum_posts + 1 WHERE `user_info`.`user_id` =2 LIMIT 1 ;

Novus Mortuus · 05-15-2008, 10:11 AM

In the end i just did this:

$forumposts = $user['forum_posts'];
$forumposts = $forumposts + 1;

UPDATE user_info SET forum_posts = '$forumposts' ....

Thanks though.

Vege · 05-15-2008, 12:30 PM

Even thou mysql allows adding "character" into int field i still would use

Quote:

UPDATE user_info SET forum_posts = ".intval($forumposts);

notice that strings are encapsulated with '', integers are not.