What are the potential pitfalls of extending MySQLi in PHP and how can they be avoided?

One potential pitfall of extending MySQLi in PHP is the risk of introducing security vulnerabilities if not done properly. To avoid this, always validate and sanitize user input before incorporating it into SQL queries to prevent SQL injection attacks. 

// Example of validating and sanitizing user input before using it in a MySQLi query
$user_input = $_POST['user_input'];

// Validate and sanitize user input
$validated_input = filter_var($user_input, FILTER_SANITIZE_STRING);

// Prepare and execute the query with the sanitized input
$stmt = $mysqli->prepare("SELECT * FROM table WHERE column = ?");
$stmt->bind_param("s", $validated_input);
$stmt->execute();

Keywords

MySQLi PHP extending pitfalls avoid

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