Are there any common pitfalls when parsing the $_SERVER['HTTP_USER_AGENT'] string in PHP?

One common pitfall when parsing the $_SERVER['HTTP_USER_AGENT'] string in PHP is not accounting for the fact that user agents can be spoofed or modified by users, leading to unreliable data. To mitigate this, it's recommended to use a library or service that can accurately parse user agent strings and provide more reliable information. 

// Using a library like browscap-php to parse user agent strings
require_once 'browscap-php/src/Browscap.php';

$bc = new phpbrowscap\Browscap();
$browser = $bc->getBrowser($_SERVER['HTTP_USER_AGENT']);

// Accessing browser information
echo $browser->browser;
echo $browser->version;
echo $browser->platform;

Keywords

$_SERVER HTTP_USER_AGENT parsing string pitfalls

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