Warning: mysqli_fetch_all() expects parameter 1 to be mysqli_result, boolean given in C:\AppServ\www\jiang-wu\Connections\database.php on line 9

Fatal error: Uncaught Error: Call to undefined function mysql_select_db() in C:\AppServ\www\jiang-wu\ballroom1.php:34 Stack trace: #0 {main} thrown in C:\AppServ\www\jiang-wu\ballroom1.php on line 34