Can't get into admin CP due to error?

[JohnnieOO]

Hello guru's,
I have a board running 3.8.6.
I have made NO/NADA/ZIP changes to the coding, templates, mods, etc....in over a year and a half (possibly longer).

Today I am getting this error(s) in the header when viewing site :

Parse error: syntax error, unexpected T_STRING in /xxxx/xxxxx/public_html/forum/global.php(607) : eval()'d code on line 1129

Warning: array_diff() [function.array-diff]: Argument #2 is not an array in [path]/modules/recentthreads.php on line 62


However, the site does work, mostly. Some forums work, some don't?

So I tried to go to VB admin CP and get this (after supplying username and pwd):

Parse error: syntax error, unexpected T_STRING in /xxxx/xxxxx/public_html/forum/global.php(607) : eval()'d code on line 1129

So, I went to my "website CP", checked and repaired my DB, problems still exist.

Beyond this, I have no idea where to start or where to go, except here on .org

Any suggestions?
Thanks,
Johnnie