php 验证访问浏览器是电脑还是手机

//判断如果为手机用户则

if(checkmobile()==true) {

$url=$_SERVER["HTTP_HOST"]; 

$urlHost=GetHost($url); 

header("Location:http://wap.".$urlHost."");

}

//验证电脑或者是手机

function checkmobile() {  //注释手机验证 

//return true;

 global $_G; 

$mobile = array();

 static $touchbrowser_list =array('iphone', 'android', 'phone', 'mobile', 'wap', 'netfront', 'java', 'opera mobi', 'opera mini',  'ucweb', 'windows ce', 'symbian', 'series', 'webos', 'sony', 'blackberry', 'dopod', 'nokia', 'samsung',     'palmsource', 'xda', 'pieplus', 'meizu', 'midp', 'cldc', 'motorola', 'foma', 'docomo', 'up.browser',     'up.link', 'blazer', 'helio', 'hosin', 'huawei', 'novarra', 'coolpad', 'webos', 'techfaith', 'palmsource',     'alcatel', 'amoi', 'ktouch', 'nexian', 'ericsson', 'philips', 'sagem', 'wellcom', 'bunjalloo', 'maui', 'smartphone',     'iemobile', 'spice', 'bird', 'zte-', 'longcos', 'pantech', 'gionee', 'portalmmm', 'jig browser', 'hiptop',     'benq', 'haier', '^lct', '320x320', '240x320', '176x220', 'windows phone');  static $wmlbrowser_list = array('cect', 'compal', 'ctl', 'lg', 'nec', 'tcl', 'alcatel', 'ericsson', 'bird', 'daxian', 'dbtel', 'eastcom',    'pantech', 'dopod', 'philips', 'haier', 'konka', 'kejian', 'lenovo', 'benq', 'mot', 'soutec', 'nokia', 'sagem', 'sgh',    'sed', 'capitel', 'panasonic', 'sonyericsson', 'sharp', 'amoi', 'panda', 'zte');

 static $pad_list = array('ipad');

 $useragent = strtolower($_SERVER['HTTP_USER_AGENT']);

 if(dstrpos($useragent, $pad_list))

{   return false;  }

 if(($v = dstrpos($useragent, $touchbrowser_list, true)))

{   $_G['mobile'] = $v;   return '2';  } 

if(($v = dstrpos($useragent, $wmlbrowser_list)))

{  

$_G['mobile'] = $v; 

 return '3'; //wml版

 }

 $brower = array('mozilla', 'chrome', 'safari', 'opera', 'm3gate', 'winwap', 'openwave', 'myop');

 if(dstrpos($useragent, $brower)) return false;

 $_G['mobile'] = 'unknown';

 if(isset($_G['mobiletpl'][$_GET['mobile']]))

{   return true;  }

else

{   return false;  }

}

function dstrpos($string, $arr, $returnvalue = false) {

 if(empty($string)) return false;

 foreach((array)$arr as $v)

{ 

 if(strpos($string, $v) !== false)

{   

$return = $returnvalue ? $v : true;   

return $return;  

} 

}  return false;

}

//截取网站主域名

function GetHost($url)

{  

  $num=substr_count($url,'.');  

  if($num>1)   

  {      

      $strNum=strpos($url,'.'); 

       $strCount=strlen($url);      

      $endNum=$strCount-$strNum;     

    $url=substr($url,($strNum+1),$endNum);         

   }  

  return $url;

}