Does PDO automatically protect against user input vulnerabilities?

PDO does not automatically protect against user input vulnerabilities such as SQL injection. To prevent these vulnerabilities, you should always use prepared statements with parameterized queries when interacting with a database using PDO. This ensures that user input is properly sanitized and escaped before being executed as a query. 

// Establish a PDO connection
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');

// Prepare a statement with a parameterized query
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");

// Bind the parameter and execute the query
$stmt->bindParam(':username', $username);
$stmt->execute();

// Fetch the results
$results = $stmt->fetchAll();

Keywords

PDO user input vulnerabilities SQL injection prepared statements data sanitization

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