What are the potential pitfalls of using the mysql extension in PHP for database operations?

One potential pitfall of using the mysql extension in PHP for database operations is that it is deprecated and no longer supported in newer versions of PHP. This can lead to security vulnerabilities and compatibility issues. To solve this problem, it is recommended to switch to either the mysqli or PDO extension for interacting with MySQL databases in PHP.

// Example of using mysqli extension instead of mysql extension
$mysqli = new mysqli('localhost', 'username', 'password', 'database');

if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

// Perform database operations using the mysqli object