这篇文章主要介绍了网站判断是手机访问还是电脑访问，然后显示不同的信息,大家参考使用吧

代码如下: <?php function isMobile(){    $useragent=isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';    $useragent_commentsblock=preg_match('|(.*?)|',$useragent,$matches)>0?$matches[0]:'';       function CheckSubstrs($substrs,$text){     foreach($substrs as $substr)      if(false!==strpos($text,$substr)){       return true;      }      return false;    }  $mobile_os_list=array('Google Wireless Transcoder','Windows CE','WindowsCE','Symbian','Android','armv6l','armv5','Mobile','CentOS','mowser','AvantGo','Opera Mobi','J2ME/MIDP','Smartphone','Go.Web','Palm','iPAQ');  $mobile_token_list=array('Profile/MIDP','Configuration/CLDC-','160×160','176×220','240×240','240×320','320×240','UP.Browser','UP.Link','SymbianOS','PalmOS',' PocketPC','SonyEricsson','Nokia','BlackBerry','Vodafone','BenQ','Novarra-Vision','Iris','NetFront','HTC_','Xda_','SAMSUNG-SGH','Wapaka','DoCoMo','iPhone','iPod');      $found_mobile=CheckSubstrs($mobile_os_list,$useragent_commentsblock) ||        CheckSubstrs($mobile_token_list,$useragent);      if ($found_mobile){     return true;    }else{     return false;    }   } if (isMobile())  echo '手机登录m.jb51.com'; else  echo '电脑登录www.jb51.com'; ?>