How to connect to database in php

• Connect sql data to database 

            First of all install local server like xampp ,wamp server.I prefer to xampp         server  https://www.apachefriends.org/download.html After That start xampp server .Then Write code to connect database 

Code is 

$conn = mysqli_connect("localhost","root","","database_name");

Check Connection 

if($conn){

echo "Connection Success";

}else

{

echo "Failed Connection";

}