How can i solve this “Warning: mysqli_connect(): (HY000/1049): Unknown database” problem?

Question

I downloaded an Event management software and install wamp server. Everything is fine but when I try to sign up into the website, it is showing me this

( ! )          


        

Answer 1

New versions of WAMP seems to install both MySQL and MariaDB. And when I logged in through the phpMyAdmin, I saw that the MySQL is using the port 3308.

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So in my PHP code, instead of using just localhost for my database hostname, I added the port to it like this: localhost:3308 and it worked.

$db = new mysqli('localhost:3308', 'root', 'password', 'db_name');