How to detect in PHP what web browser are visitors using ?

Can you please give me suggestion, how to detect the name of web browser, that is used by visitors ? I need to use this function in PHP.

Hi,

To detect the name of visitor's web browser, you can the use the function below. At first, it collects the general informations via $_SERVER['HTTP_USER_AGENT']. Then it search for a specific browser name. If there is a match, it will return browser name.

function getBrowser() {

$user_agent = $_SERVER['HTTP_USER_AGENT'];
$browser = "N/A";

$browsers = array(
'/msie/i' => 'Internet explorer',
'/firefox/i' => 'Firefox',
'/safari/i' => 'Safari',
'/chrome/i' => 'Chrome',
'/edge/i' => 'Edge',
'/opera/i' => 'Opera',
'/mobile/i' => 'Mobile browser'
);

foreach ($browsers as $regex => $value) {
if (preg_match($regex, $user_agent)) { $browser = $value; }
}

return $browser;
}

echo "Browser: " . getBrowser();