class_core.php file problem!

[Nakash]

I don't know how it happend but somehow my class_core.php file has changed.
Now, when I type my site's address I only see

Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /home/nakash/domains/unique-rp.com/public_html/forum/includes/class_core.php(4024) : eval()'d code(1) : eval()'d code on line 2

I really don't know how to fix it, I didn't change anything in that file.

The file: http://pastebin.com/pBWuP4w9

Thank you!