Как определить версию браузера через php?

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<?php

$browser = get_browser($_SERVER['HTTP_USER_AGENT']);

var_dump($browser);

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$browser = $_SERVER['HTTP_USER_AGENT'];

if (preg_match('/MSIE/i', $browser)) {
    echo "Internet Explorer ";
    preg_match('/MSIE (.*?);/', $browser, $matches);
    echo $matches[1];
} elseif (preg_match('/Firefox/i', $browser)) {
    echo "Mozilla Firefox ";
    preg_match('/Firefox/(.*?);/', $browser, $matches);
    echo $matches[1];
} elseif (preg_match('/Chrome/i', $browser)) {
    echo "Google Chrome ";
    preg_match('/Chrome/(.*?);/', $browser, $matches);
    echo $matches[1];
} elseif (preg_match('/Safari/i', $browser)) {
    echo "Apple Safari ";
    preg_match('/Version/(.*?);/', $browser, $matches);
    echo $matches[1];
} elseif (preg_match('/Opera/i', $browser)) {
    echo "Opera ";
    preg_match('/Opera/(.*?);/', $browser, $matches);
    echo $matches[1];
} else {
    echo "Other";
}