What are some common pitfalls to avoid when working with arrays and MySQL data in PHP?

One common pitfall to avoid when working with arrays and MySQL data in PHP is not properly sanitizing user input before using it in SQL queries, which can lead to SQL injection attacks. To prevent this, always use prepared statements with parameterized queries to safely execute SQL commands. 

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

Keywords

arrays MySQL data manipulation SQL injection error handling

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