How can the misuse of object attributes and methods in PHP code affect database operations like querying and insertion?

Misusing object attributes and methods in PHP code can lead to incorrect data being queried or inserted into a database. This can result in data inconsistency, errors, or security vulnerabilities. To prevent this, always properly validate and sanitize user input, use parameterized queries to prevent SQL injection, and ensure that object attributes and methods are used correctly in database operations. 

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

Keywords

Object attributes methods PHP code database operations querying insertion

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