如何将múltiples服务器与同一个数据库连接？

Question

I hired 46 VPS and today only one have with database, and another one like to slave(replica).

How i can connect to this two(or more) server for manage the same database?

For example: server #1 is down, so connect to server #2 or #3, #4, #5...

Right now i know it:

$connection=Mysqli_connect(...);

Maybe exists another method like to:

$connection=mysqli_connect_mutiserver(array(...));

I think un a loop to check ping and time response, and if some fail, this return the next good connection.

For(...){
    if(ping(...) and timing(...)){
        return $serverInfo;
    }
}

P.s: i'm sorry, right now i used my smartphone to post it(maybe dont show the code like to prettyprint.