The old PHP function mysql_connect had the new_link parameter that 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 do not you?
$mysqli = new mysqli($host, $user, $pass, $database);
I searched the documentation but could not find it.
Each mysqli instance is completely independent of each other, so each db connection of an instance is new_link . Therefore, there is nothing equivalent to new_link in mysqli .
The fourth argument of the mysql_connect() function is to force php to create a new connection, the default behavior is a mysql_connect() it returns the connection, in the case of a second with the same information (server, user password ) it returns the same connection, in the extension of mysqli does not exist this parameter.