问PHP-登录并打开链接

EN

       <?php
$uname=$_POST['uname'];//username
$password=$_POST['password'];//password 
session_start();
    $con=mysqli_connect("localhost","root","","login");//mysqli("localhost","username of database","password of database","database name")
$result=mysqli_query($con,"SELECT * FROM `login_info` WHERE `uname`='$uname' && `password`='$password'");
$count=mysqli_num_rows($result);
if($count==1)
{
    echo "Login success";
    $_SESSION['log']=1;


}
else
{
    echo "please fill proper details";
    header("refresh:2;url=index.php");// it takes 2 sec to go index page
}
?>