Db-Connection错误

Question

我在尝试连接数据库时遇到这些错误：

  

警告：mysqli_connect（）:( HY000 / 1045）：第2行的C：\ xampp \ htdocs \ Vehicleshowroom \ dbconnection.php中的用户'root'@'localhost'（使用密码：YES）拒绝访问

     

警告：mysqli_error（）期望在第5行的C：\ xampp \ htdocs \ Vehicleshowroom \ dbconnection.php中给出1个参数0   无法连接

代码是

<?php 
    $con=mysqli_connect("localhost","root", "technology","vehicleshowroom"); 
    if(!$con) { 
       die("could not connect".mysqli_error()); 
    } 
?>

Answer 1

＆＃13;

＆＃13;

<?php

$con = mysqli_connect("localhost", "root", "", "vehicleshowroom");

if (mysqli_connect_errno()) {
    echo mysqli_connect_error();
    exit();
}
?>

＆＃13;

＆＃13;

＆＃13;