Warning: Use of undefined constant APP_ID - assumed 'APP_ID' (this will throw an Error in a future version of PHP) in /var/www/include/setting.php on line 23

Notice: Undefined variable: db_APP_ID in /var/www/include/setting.php on line 23

Notice: Trying to get property 'hostname' of non-object in /var/www/include/mysql.function.php on line 41

Warning: error_log(ROOT/error.log): failed to open stream: No such file or directory in /var/www/include/some.function.php on line 108
Mysql Server Error