What are some common pitfalls when working with PHP and MySQL for beginners?

One common pitfall for beginners when working with PHP and MySQL is not properly sanitizing user input, leaving the application vulnerable to SQL injection attacks. To solve this issue, always use prepared statements or parameterized queries to safely interact with the database. 

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

Keywords

SQL injection PDO mysqli error handling data validation

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