What are some best practices for structuring PHP code to handle database interactions securely?

One best practice for structuring PHP code to handle database interactions securely is to use prepared statements with parameterized queries to prevent SQL injection attacks. This involves separating SQL logic from user input and binding parameters to the query. Additionally, it is important to validate and sanitize user input to prevent other types of attacks. 

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

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

// Bind parameters to the query
$stmt->bindParam(':username', $username);

// Execute the query
$stmt->execute();

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

Keywords

SQL injection PDO prepared statements parameterized queries data validation

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