出现弹出窗口后关闭浏览器

Question

用户登录后，将出现一个弹出窗口，显示index.php。但是，具有login.php的原始浏览器更改为authenticate.php。 如何完全关闭以前的浏览器？

<?php 
session_start();
require_once './config/config.php';
if ($_SERVER['REQUEST_METHOD'] === 'POST') 
{
    $username = filter_input(INPUT_POST, 'username');
    $passwd = filter_input(INPUT_POST, 'passwd');
    $remember = filter_input(INPUT_POST, 'remember');
    $passwd=  md5($passwd);
   	
    //Get DB instance. function is defined in config.php
    $db = getDbInstance();

    $db->where ("user_name", $username);
    $db->where ("passwd", $passwd);
    $row = $db->get('admin_accounts');
     
    if ($db->count >= 1) {
        $_SESSION['user_name'] = $username;
        $_SESSION['user_logged_in'] = TRUE;
        $_SESSION['admin_type'] = htmlentities ($row[0]['admin_type']);
        $_SESSION['first_name'] = htmlentities ($row[0]['first_name']);
        $_SESSION['last_name'] = htmlentities ($row[0]['last_name']);
        $_SESSION['position'] = htmlentities ($row[0]['position']);
       	if($remember)
       	{
       		setcookie('username',$username , time() + (86400 * 90), "/");
       		setcookie('password',$passwd , time() + (86400 * 90), "/");
       	}
        echo "<script>window.open('http://localhost/index', '_blank', 'toolbar=0,location=0,menubar=0');</script>";
        exit;
    } else {
        $_SESSION['login_failure'] = "Invalid username or password";
        header('Location:login');
        exit;
    }
  
}

这是打开弹出窗口的代码的一部分：

echo "<script>window.open('http://localhost/index', '_blank', 'toolbar=0,location=0,menubar=0');</script>";

我已经尝试使用window.close（）;

echo "<script>window.close(); window.open('http://localhost/index', '_blank', 'toolbar=0,location=0,menubar=0');</script>";