How to get user web browser using php?

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$userAgent = $_SERVER['HTTP_USER_AGENT'];

if (strpos($userAgent, 'Chrome') !== false) {
    $browser = 'Google Chrome';
} elseif (strpos($userAgent, 'Firefox') !== false) {
    $browser = 'Mozilla Firefox';
} elseif (strpos($userAgent, 'Edge') !== false) {
    $browser = 'Microsoft Edge';
} elseif (strpos($userAgent, 'Safari') !== false) {
    $browser = 'Apple Safari';
} elseif (strpos($userAgent, 'Opera') !== false || strpos($userAgent, 'OPR') !== false) {
    $browser = 'Opera';
} else {
    $browser = 'Unknown';
}

echo 'Your web browser is: ' . $browser;