phpは携帯電話のアクセスを判断する

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;   

}

回転元:http://www.cnblogs.com/jincon/archive/2013/02/05/2893221.html