Warning: Undefined variable $mysqli in /home/arunjo/arunjo.com/public_html/activities.php on line 14

Fatal error: Uncaught mysqli_sql_exception: mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. Please use an administration tool to reset your password with the command SET PASSWORD = PASSWORD('your_existing_password'). This will store a new, and more secure, hash value in mysql.user. If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-passwords flag from your my.cnf file in /home/arunjo/arunjo.com/public_html/admin/function.php:32 Stack trace: #0 /home/arunjo/arunjo.com/public_html/admin/function.php(32): mysqli->__construct('mysql13.xserver...', 'arunjo_sqluser', 'npoarunjo12345', 'arunjo_sqlserve...') #1 /home/arunjo/arunjo.com/public_html/admin/function.php(238): sqliDB('select * from a...') #2 /home/arunjo/arunjo.com/public_html/admin/function.php(353): rowsCount('1', '') #3 /home/arunjo/arunjo.com/public_html/activities.php(14): pageList('30', '3', '1', '', NULL) #4 {main} thrown in /home/arunjo/arunjo.com/public_html/admin/function.php on line 32