Mysqli - When opening 2 connections to the same host with mysql, but different databases, does mysqli open the connection once?

Question

When I have a situation like this:

$databaseA = new mysqli($host,$user,$pass,\"databaseA\");
$databaseB = new mysqli($host,$user,$pass,\"databaseB\");
         


        

Answer 1

For every mysqli-object there will be a separate connection.

Try a

SHOW FULL PROCESSLIST; 

on your MySQL server during runtime, you'll see two different processes connected from the same host if your example is implemented.