What are common errors to look out for when saving data to a database using PHP?

Common errors to look out for when saving data to a database using PHP include SQL injection vulnerabilities, improper data validation, and not handling database connection errors properly. To prevent SQL injection, always use prepared statements or parameterized queries. Validate user input to ensure it meets the expected format and sanitize data before inserting it into the database. Additionally, handle database connection errors gracefully to provide informative error messages to users. 

// Example of using prepared statements to prevent SQL injection
$stmt = $pdo->prepare("INSERT INTO users (username, email) VALUES (:username, :email)");
$stmt->bindParam(':username', $username);
$stmt->bindParam(':email', $email);
$stmt->execute();

Keywords

SQL injection data validation PDO error handling database connection

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