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标题: php检测useragent版本示例 [打印本页]

作者: wx_pylelnL4 时间: 2018-2-14 05:59

         [U]复制代码[/U] 代码如下:
static $userAgent = '';
static function getUserAgent()
{
      $header = getallheaders();
      self :: $userAgent = $header['User-Agent'];
}
  function findUserAgentByKey($ua, $key)
{
      $len = strlen($key);
      $start = strpos($ua, $key);
      $pos = strpos($ua, ' ', $start + $len + 1);
      return substr($ua, $start + $len, $pos - $len - $start);
}
static function detectUserAgent()
{
      self :: getUserAgent();
      if (strpos(self :: $userAgent, 'MSIE') != null)
      {
         self :: $version[] = IE;
         self :: $version[] =self:: findUserAgentByKey(self :: $userAgent, 'MSIE');
      }
      else if (strpos(self :: $userAgent, 'Gecko/') != null)
      {
         self :: $version[] = FIREFOX;
         self :: $version[] =self::  findUserAgentByKey(self :: $userAgent, 'Firefox/');
      }
      else if (strpos(self :: $userAgent, 'AppleWebKit/') != null)
      {
         self :: $version[] = CHROME;
         self :: $version[] = self:: findUserAgentByKey(self :: $userAgent, 'Chrome/');
      }
      else if (strpos(self :: $userAgent, 'Presto/') != null)
      {
         self :: $version[] = OPERA;
         self :: $version[] = self:: findUserAgentByKey(self :: $userAgent, 'Opera/');
      }
      else
      {
      }
      return self :: $version;
}
function matchUserAgent($ua, $key)
{
      preg_match("/$key.([^\s]*?)\s/", $ua, $out);
      return $out[1];
}
}
$ua=UserAgentDetect::detectUserAgent();
print_r($ua);


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