What are the implications of using $_SESSION['bot'] for tracking user agents in PHP, and are there any alternative methods that could be more effective?

Using $_SESSION['bot'] for tracking user agents in PHP may not be the most reliable method as user agents can be easily manipulated. A more effective alternative would be to use the $_SERVER['HTTP_USER_AGENT'] variable to get the user agent directly from the request headers. This method provides a more accurate way of tracking user agents. 

// Get user agent from request headers
$user_agent = $_SERVER['HTTP_USER_AGENT'];

// Use the user agent for tracking purposes

Keywords

$_SESSION user agents tracking alternative methods effectiveness

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