How can the PHP code provided be modified to extract and store only the browser value (e.g., "IE") in a variable?

To extract and store only the browser value (e.g., "IE") in a variable, we can modify the existing code by using regular expressions to extract the browser information from the user agent string. We can then assign this extracted browser value to a variable for further use. 

$user_agent = $_SERVER['HTTP_USER_AGENT'];
$browser = '';
if (preg_match('/MSIE|Trident/i', $user_agent)) {
    $browser = 'IE';
} elseif (preg_match('/Firefox/i', $user_agent)) {
    $browser = 'Firefox';
} elseif (preg_match('/Chrome/i', $user_agent)) {
    $browser = 'Chrome';
} elseif (preg_match('/Safari/i', $user_agent)) {
    $browser = 'Safari';
} elseif (preg_match('/Opera/i', $user_agent)) {
    $browser = 'Opera';
} else {
    $browser = 'Unknown';
}

echo "Browser: " . $browser;

Keywords

PHP code modification browser value variable extraction

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