What is the significance of the error message "Access denied for user: ' web879@localhost' (Using password: YES)" in the context of PHP database connection?

The error message "Access denied for user: 'web879@localhost' (Using password: YES)" indicates that the PHP script is unable to connect to the database because the provided username or password is incorrect. To solve this issue, double-check the username and password in the database connection settings to ensure they are correct.

<?php
$servername = "localhost";
$username = "web879";
$password = "your_password";
$dbname = "your_database";

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

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