How can the user modify the code to only recognize the browser name and not the rest of the user agent string?

The user can modify the code to only recognize the browser name by using a regular expression to extract the browser name from the user agent string. This can be achieved by matching the browser name pattern in the user agent string and extracting it for further use. 

$user_agent = $_SERVER['HTTP_USER_AGENT'];
$browser_name = '';

if (preg_match('/(Chrome|Firefox|Safari|Edge)/i', $user_agent, $matches)) {
    $browser_name = $matches[0];
}

echo "Browser Name: " . $browser_name;

Keywords

PHP user agent string browser name strpos substr

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