What are the best practices for handling exceptions related to user authentication in PHP?

When handling exceptions related to user authentication in PHP, it is important to provide clear error messages to the user without revealing sensitive information. It is also crucial to log the exception details for debugging purposes. Implementing try-catch blocks and custom exception classes can help in gracefully handling authentication errors. 

try {
    // code for user authentication
    if(!$authenticated) {
        throw new Exception('Invalid credentials. Please try again.');
    }
} catch(Exception $e) {
    error_log('Authentication Error: ' . $e->getMessage());
    // display user-friendly error message
    echo 'Authentication failed. Please try again.';
}

Keywords

try-catch exception handling authentication error handling PHP

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