Fatal Error

Fatal Error:

lib/WikiDB/backend/PearDB.php:60 Error[256]: Can't connect to database: WikiDB_backend_PearDB_mysql: fatal database error

DB Error: extension not found
( [DB Error: extension not found] ** mysql://wikiprod:XXXXXXXX@localhost/wikiprod)

lib/main.php:54 Warning[8192]: Non-static method WikiDB::open() should not be called statically

lib/WikiDB/backend/PearDB_mysql.php:193 Warning[2]: Declaration of WikiDB_backend_PearDB_mysql::_unlock_tables() should be compatible with WikiDB_backend_PearDB::_unlock_tables($write_lock)

lib/WikiDB/backend/PearDB.php:60 Error[256]: Can't connect to database: WikiDB_backend_PearDB_mysql: fatal database error

DB Error: extension not found
( [DB Error: extension not found] ** mysql://wikiprod:XXXXXXXX@localhost/wikiprod)