Warning: mysqli_select_db() expects exactly 2 parameters, 1 given in /home/friends/public_html/db/dbConnection.php on line 6

Fatal error: Uncaught Error: Call to undefined function mysql_error() in /home/friends/public_html/db/dbConnection.php:6 Stack trace: #0 /home/friends/public_html/registration.php(2): include() #1 {main} thrown in /home/friends/public_html/db/dbConnection.php on line 6