Doubt Mysqli Parameter new_link

Question

The old PHP function mysql_connect possessed the parameter new_link which allowed connection to several different banks in the same script:

Example:

$connect = mysql_connect($host,$user,$pass,$new_link);

How does this work in mysqli? Does it have this parameter? Or does it not need?

$mysqli = new mysqli($host, $user, $pass, $database);

I searched the documentation but did not locate.

Answer 1

Every instance mysqli is completely independent of each other and therefore every db connection of an instance is a new_link. Therefore, there is nothing equivalent to new_link in the mysqli.

Answer 2

The fourth argument of the function mysql_connect() serves to force php to create a new connection, the default behavior is a call mysql_connect() it returns the connection, in the case of a second with the same information(server, password user) it returns the same connection, in the mysqli extension there is no such parameter.