some who doesn’t know what they’re doing here. I am trying to connect to a MySQL database with mysqli from a PHP site running on a local Apache server with PHP 8.3.7, but even when I supply the wrong credentials mysqli is not throwing an exception (not showing on website).

            echo nl2br("Hellolrd n");
            echo "TEST 123456789";

            $servername_mysql = "localhost";
            $port_mysql = 3306;
            $username_mysql = "user1";
        $password_mysql = 1234;
            $database_mysql = "db1";
            $charset = "utf8mb4";

        mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);

            try {
                $db = new mysqli($servername_mysql, $username_mysql, $password_mysql,                   $database_mysql, $port_mysql);
                $db->set_charset($charset);
                $db->options(MYSQLI_OPT_INT_AND_FLOAT_NATIVE, 1);
            } catch (mysqli_sql_exception $e) {
                throw new mysqli_sql_exception($e->getMessage(), $e->getCode());
            }
            unset($servername_mysql, $port_mysql, $username_mysql, $password_mysql, $database_mysql, $charset);

screenshot of website

I have tried to display host_info with echo, but that also showed nothing. I know that the database is live and working as I managed to connect to it with the MySQL shell on windows and use some commands. The top two lines are showing so my PHP interpreter is working fine. I am following this guide. I am going kinda insane here, hopefully somebody here can help me. Thanks in advance.