I added the value of ft_min_word_len = 3" to my.cnf, restarted mysql and repaired all the indexes using this command: mysqlcheck --repair --databases mydb. Then I ran the search. It still does not work.
Apparently, jorb has been added "xxx" to any post he makes that includes an attachment. Then, when he wanted to find them, he would use the ubb search to search for xxx and put his Display Name in that field. He claims it worked before. It does not work now.
I can run this search on Google "jorb xxx site:stovebolt.com" and his images show up.
This is the first time I've ever heard of this trick, so I can't vouch that it worked before, but I don't doubt that jorb is telling the truth.
Vitals for our setup are in my sig. I have root access to the server, and yes, I upgraded recently to php7.
To show the state of ft_min_word_len, you can use this query in
Control Panel > Database Tools > SQL Command
SHOW VARIABLES LIKE 'ft_min_word_len';
Attached screenshot is the query result as returned on UBBCentral -
