What are the advantages of using PDO or mysqli with Prepared Statements over mysql functions in PHP?

Using PDO or mysqli with Prepared Statements is preferred over mysql functions in PHP because it helps prevent SQL injection attacks by separating SQL logic from user input. Prepared Statements also improve performance by allowing the database to compile the SQL query once and execute it multiple times with different parameters. Additionally, PDO and mysqli offer more features and support for different database types compared to the deprecated mysql functions. 

// Using PDO with Prepared Statements
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->bindParam(':username', $username);
$stmt->execute();
$results = $stmt->fetchAll();

// Using mysqli with Prepared Statements
$mysqli = new mysqli('localhost', 'username', 'password', 'mydatabase');
$stmt = $mysqli->prepare('SELECT * FROM users WHERE username = ?');
$stmt->bind_param('s', $username);
$stmt->execute();
$results = $stmt->get_result()->fetch_all(MYSQLI_ASSOC);

Keywords

PDO mysqli Prepared Statements mysql functions PHP

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