What are the potential security risks when including dynamic content in PHP and how can they be mitigated?

When including dynamic content in PHP, there is a risk of code injection attacks if user input is not properly sanitized. To mitigate this risk, always use prepared statements when interacting with a database and sanitize user input before using it in your code. 

// Example of using prepared statements to mitigate SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->execute(['username' => $_POST['username']]);
$user = $stmt->fetch();

Keywords

XSS SQL injection input validation escaping prepared statements

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