Fatal error: Uncaught mysqli_sql_exception: Unknown database 'test' in /var/www/php-projects/php/php2_3_mysql_alapok/index.php:18 Stack trace: #0 /var/www/php-projects/php/php2_3_mysql_alapok/index.php(18): mysqli_connect() #1 {main} thrown in /var/www/php-projects/php/php2_3_mysql_alapok/index.php on line 18