Warning: mysqli_connect(): (HY000/1045): Access denied for user 'username'@'localhost' (using password: YES)

Question

Warning: mysqli_connect(): (HY000/1045): Access denied for user \'username\'@\'localhost\' (using password: YES) in C:\\Users\\xampp\\htdocs\\PHP_Login_Script

Answer 1

Use this

After setup this you will not receive this issue again

SET PASSWORD FOR root@localhost = PASSWORD('your_root_password');

I was stuck up in this issue after used this query everything was solved

Answer 2

Try the above answers 90% of the time this will be you issue. For me my problem was that my database password had a $ in it.

$servername = '127.0.0.1';
$username = 'user_bob';
$password = 'sdfasdf$B';

$conn = mysqli_connect($servername, $username, $password, 'any_database');

//DO NOT USE DOUBLE QUOTES;
//$password = "sdfasdf$B"; 

Answer 3

The question has been answered above, Just to make you feel comfortable using all four string at the same time in a connection

<?php
  define("DB_HOST", "localhost");
  define("DB_USER", "root");
  define("DB_PASSWORD", "");
  define("DB_DATABASE", "databasename");

  $db = new mysqli(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_DATABASE);
  // you could test connection eventually using a if and else conditional statement, 
  // feel free to take out the code below once you see Connected!
  if ($db) {
    echo "Connected!";
  } else {
    echo "Connection Failed";
  }
?>

Answer 4

$db = mysqli_connect(DB_SERVER,DB_USERNAME,DB_PASSWORD,DB_DATABASE);

Put " DB_HOST " instead of " DB_SERVER " also 
put " DB_USER " Instead of " DB_USERNAME " 

than it working fine !

Answer 5

If youre running wamp update

define("DB_HOST", "localhost");

To your machines ip address (mine is 192.168.0.25);

define("DB_HOST", "192.168.0.25");

You can find it on window by typing ipconfig in your console or ifconfig on mac/linux

Answer 6

you defIne as DB_USER but use as DB_USERNAME. Also php says username@localhost cant access. Not root@localhost.

Change your define or connect paramater.