Are there any potential pitfalls to be aware of when interacting with users in PHP scripts?

One potential pitfall when interacting with users in PHP scripts 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 ensure that user input is not directly concatenated into SQL queries. 

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

Keywords

SQL injection cross-site scripting user input validation session hijacking secure coding practices

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