PHP判断是否是移动设备的函数

PHP判断是否是移动设备的函数

比单一的UA判断要好的多！

可以直接拿来用用！

function is_mobile_request(){

  $_SERVER['ALL_HTTP'] = isset($_SERVER['ALL_HTTP']) ? $_SERVER['ALL_HTTP'] : '';   
  $mobile_browser = '0';   
  if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i', strtolower($_SERVER['HTTP_USER_AGENT'])))   
    $mobile_browser++;   
  if((isset($_SERVER['HTTP_ACCEPT'])) and (strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml') !== false))   
    $mobile_browser++;   
  if(isset($_SERVER['HTTP_X_WAP_PROFILE']))   
    $mobile_browser++;   
  if(isset($_SERVER['HTTP_PROFILE']))   
    $mobile_browser++;   
  $mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'],0,4));   
  $mobile_agents = array(   
        'w3c ','acs-','alav','alca','amoi','audi','avan','benq','bird','blac',   
        'blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno',   
        'ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-',   
        'maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-',   
        'newt','noki','oper','palm','pana','pant','phil','play','port','prox',   
        'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',   
        'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-',   
        'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp',   
        'wapr','webc','winw','winw','xda','xda-'   
        );   
  if(in_array($mobile_ua, $mobile_agents))   
    $mobile_browser++;   
  if(strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false)   
    $mobile_browser++;   
  // Pre-final check to reset everything if the user is on Windows   
  if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false)   
    $mobile_browser=0;   
  // But WP7 is also Windows, with a slightly different characteristic   
  if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows phone') !== false)   
    $mobile_browser++;   
  if($mobile_browser>0)   
    return true;   
  else  
    return false;   

}

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