问如何获取准确的浏览器名称和版本？

EN

echo $_SERVER['HTTP_USER_AGENT'] . "\n\n";

$browser = get_browser(null, true);
print_r($browser);

Array
(
    [browser_name_regex] => ^mozilla/5\.0 (windows; .; windows nt 5\.1; .*rv:.*) gecko/.* firefox/0\.9.*$
    [browser_name_pattern] => Mozilla/5.0 (Windows; ?; Windows NT 5.1; *rv:*) Gecko/* Firefox/0.9*/
    [parent] => Firefox 0.9
    [platform] => WinXP
    [browser] => Firefox
    [version] => 0.9
    [majorver] => 0
    [minorver] => 9
    [cssversion] => 2
    [frames] => 1
    [iframes] => 1
    [tables] => 1
    [cookies] => 1
    [backgroundsounds] =>
    [vbscript] =>
    [javascript] => 1
    [javaapplets] => 1
    [activexcontrols] =>
    [cdf] =>
    [aol] =>
    [beta] => 1
    [win16] =>
    [crawler] =>
    [stripper] =>
    [wap] =>
    [netclr] =>
)

var browser = '';
var browserVersion = 0;

if (/Opera[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
    browser = 'Opera';
} else if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
    browser = 'MSIE';
} else if (/Navigator[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
    browser = 'Netscape';
} else if (/Chrome[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
    browser = 'Chrome';
} else if (/Safari[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
    browser = 'Safari';
    /Version[\/\s](\d+\.\d+)/.test(navigator.userAgent);
    browserVersion = new Number(RegExp.$1);
} else if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
    browser = 'Firefox';
}
if(browserVersion === 0){
    browserVersion = parseFloat(new Number(RegExp.$1));
}
alert(browser + "*" + browserVersion);

<?php
function getBrowser() { 
  $u_agent = $_SERVER['HTTP_USER_AGENT'];
  $bname = 'Unknown';
  $platform = 'Unknown';
  $version= "";

  //First get the platform?
  if (preg_match('/linux/i', $u_agent)) {
    $platform = 'linux';
  }elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {
    $platform = 'mac';
  }elseif (preg_match('/windows|win32/i', $u_agent)) {
    $platform = 'windows';
  }

  // Next get the name of the useragent yes seperately and for good reason
  if(preg_match('/MSIE/i',$u_agent) && !preg_match('/Opera/i',$u_agent)){
    $bname = 'Internet Explorer';
    $ub = "MSIE";
  }elseif(preg_match('/Firefox/i',$u_agent)){
    $bname = 'Mozilla Firefox';
    $ub = "Firefox";
  }elseif(preg_match('/OPR/i',$u_agent)){
    $bname = 'Opera';
    $ub = "Opera";
  }elseif(preg_match('/Chrome/i',$u_agent) && !preg_match('/Edge/i',$u_agent)){
    $bname = 'Google Chrome';
    $ub = "Chrome";
  }elseif(preg_match('/Safari/i',$u_agent) && !preg_match('/Edge/i',$u_agent)){
    $bname = 'Apple Safari';
    $ub = "Safari";
  }elseif(preg_match('/Netscape/i',$u_agent)){
    $bname = 'Netscape';
    $ub = "Netscape";
  }elseif(preg_match('/Edge/i',$u_agent)){
    $bname = 'Edge';
    $ub = "Edge";
  }elseif(preg_match('/Trident/i',$u_agent)){
    $bname = 'Internet Explorer';
    $ub = "MSIE";
  }

  // finally get the correct version number
  $known = array('Version', $ub, 'other');
  $pattern = '#(?<browser>' . join('|', $known) .
')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
  if (!preg_match_all($pattern, $u_agent, $matches)) {
    // we have no matching number just continue
  }
  // see how many we have
  $i = count($matches['browser']);
  if ($i != 1) {
    //we will have two since we are not using 'other' argument yet
    //see if version is before or after the name
    if (strripos($u_agent,"Version") < strripos($u_agent,$ub)){
        $version= $matches['version'][0];
    }else {
        $version= $matches['version'][1];
    }
  }else {
    $version= $matches['version'][0];
  }

  // check if we have a number
  if ($version==null || $version=="") {$version="?";}

  return array(
    'userAgent' => $u_agent,
    'name'      => $bname,
    'version'   => $version,
    'platform'  => $platform,
    'pattern'    => $pattern
  );
} 

// now try it
$ua=getBrowser();
$yourbrowser= "Your browser: " . $ua['name'] . " " . $ua['version'] . " on " .$ua['platform'] . " reports: <br >" . $ua['userAgent'];
print_r($yourbrowser);
?>