What potential pitfalls should be considered when working with PHP for web development?

One potential pitfall when working with PHP for web development is the risk of SQL injection attacks if user input is not properly sanitized. To prevent this, always use prepared statements or parameterized queries when interacting with a database to avoid malicious SQL injection attacks. 

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

Keywords

SQL injection XSS attacks file inclusion vulnerabilities insecure file uploads session hijacking

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