Laravel Access denied for user 'root'@'localhost' (using password: YES) in laravel 4.2

Question

I have an old project which is built using Laravel 4.2. I am getting the following error:

PDOException (1045) SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES)

I have googled and tried everything but I couldn't fix it.

.env file

APP_KEY=az9tq5VHQCV9g5m2CsgY89jtijrCMgEA
DB_HOST=localhost
DB_DATABASE=billing
DB_USERNAME=root
DB_PASSWORD=1234

database.php

'mysql' => array(
            'driver'    => 'mysql',
            'host'      => 'localhost',
            'database'  => 'billing',
            'username'  => 'root',
            'password'  => '1234',
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
        ),

Can anyone guide me where I'm doing wrong ?

Note: Before asking the question, I tried by updating composer update as well as most of the stackoverflow answers.

Updated

I have tested this connection by creating this php file:

<?php
$servername = "localhost";
$username = "root";
$password = "1234";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully";
?>

I will get "Connected successfully" message.

Answer 1

Laravel 4.x doesn't even support ENV files. You just have to see whether settings in ./config/[env name]/database.php are correct.