What potential issues can arise when trying to extract browser information in PHP?

One potential issue when extracting browser information in PHP is that the user agent string can be easily manipulated by the client, leading to inaccurate data. To solve this, it is recommended to use a library or service that can accurately parse and detect browser information. 

// Example using the browscap PHP extension to accurately detect browser information
$browser = get_browser(null, true);
echo "Browser: " . $browser['browser'] . " " . $browser['version'];

Keywords

User agent $_SERVER browser detection compatibility security.

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