php connection for potato

db_connection.php

<?php
	function opencon(){
		$dbhost = "localhost";
		$dbuser="root";
		$dbpass=/*"insert your password here"*/;
		$db=/*"insert your database name here. Mine's potato"*/;

		$conn = new mysqli($dbhost, $dbuser, $dbpass, $db) or die("Connection failed: %s \n". $conn->error);

		return $conn;
	}

	function closecon($conn){
		$conn->close();
	}

?>

index.php

<?php
include 'db_connection.php';

$conn = opencon();

echo "Connected Successfully";

?>