What are the potential pitfalls to avoid when working with OOP in PHP and MySQL databases?

One potential pitfall to avoid when working with OOP in PHP and MySQL databases is not properly sanitizing user input before using it in database queries. This can lead to SQL injection attacks, where malicious users can manipulate your database queries. To prevent this, always use prepared statements with parameterized queries to ensure that user input is properly sanitized. 

// Example of using prepared statements to sanitize user input in a MySQL query
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->bindParam(':username', $username);
$stmt->execute();
$result = $stmt->fetch();

Keywords

PHP OOP MySQL database errors

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