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检测useragent版本

时间：2021-07-01 10:21:17 帮助过：23人阅读

检测注流浏览器及其版本
  2. define('IE', 1);
  3. define('FIREFOX', 2);
  4. define('CHROME', 3);
  5. define('OPERA', 4);
  6. class UserAgentDetect
  7. {
  8. static $version = array();
  10. static $userAgent = '';
  12. static function getUserAgent()
  13. {
  14. $header = getallheaders();
  15. self :: $userAgent = $header['User-Agent'];
  16. }
  17. function findUserAgentByKey($ua, $key)
  18. {
  19. $len = strlen($key);
  20. $start = strpos($ua, $key);
  22. $pos = strpos($ua, ' ', $start + $len + 1);
  24. return substr($ua, $start + $len, $pos - $len - $start);
  25. }
  26. static function detectUserAgent()
  27. {
  28. self :: getUserAgent();
  30. if (strpos(self :: $userAgent, 'MSIE') != null)
  31. {
  32. self :: $version[] = IE;
  33. self :: $version[] =self:: findUserAgentByKey(self :: $userAgent, 'MSIE');
  34. }
  35. else if (strpos(self :: $userAgent, 'Gecko/') != null)
  36. {
  38. self :: $version[] = FIREFOX;
  39. self :: $version[] =self:: findUserAgentByKey(self :: $userAgent, 'Firefox/');
  40. }
  41. else if (strpos(self :: $userAgent, 'AppleWebKit/') != null)
  42. {
  43. self :: $version[] = CHROME;
  44. self :: $version[] = self:: findUserAgentByKey(self :: $userAgent, 'Chrome/');
  45. }
  46. else if (strpos(self :: $userAgent, 'Presto/') != null)
  47. {
  48. self :: $version[] = OPERA;
  49. self :: $version[] = self:: findUserAgentByKey(self :: $userAgent, 'Opera/');
  50. }
  51. else
  52. {
  53. }
  55. return self :: $version;
  56. }
  59. function matchUserAgent($ua, $key)
  60. {
  61. preg_match("/$key.([^\s]*?)\s/", $ua, $out);
  63. return $out[1];
  64. }
  65. }
  66. $ua=UserAgentDetect::detectUserAgent();
  68. print_r($ua);

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