What are some common reasons for the error message "Access denied for user 'www-data'@'xx.13.xx.10x' (using password: NO)" when using PDO in PHP?

The error message "Access denied for user 'www-data'@'xx.13.xx.10x' (using password: NO)" typically occurs when the PHP script is trying to connect to a MySQL database using PDO without providing the correct password. To solve this issue, ensure that the correct database credentials are provided in the PDO connection string. 

$host = 'localhost';
$dbname = 'your_database_name';
$username = 'your_username';
$password = 'your_password';

try {
    $pdo = new PDO("mysql:host=$host;dbname=$dbname", $username, $password);
    // Other database operations
} catch (PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}

Keywords

PDO PHP Access denied www-data MySQL

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