Cannot use database

The URL Is:
http:///read.php?keyword=THREE+SILENT+LETTERS+BY%EF%BF%BD%EF%BF%BD+%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD&skinco=sunset&tid=11147

MySQL Server Error:
Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) ( 2002 )

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http://www.phpwind.net