Notice: Object of class mysqli could not be converted to int in /var/www/html/Ens/Fg/PHP_Fg/lista_insc_fg.php on line 11

Fatal error: Uncaught Error: Call to undefined function mysql_select_db() in /var/www/html/Ens/Fg/PHP_Fg/lista_insc_fg.php:15 Stack trace: #0 {main} thrown in /var/www/html/Ens/Fg/PHP_Fg/lista_insc_fg.php on line 15