$agent = check_wap();

if( $agent )

{

    header('Location: http://www.lewanau.com');

    exit;

}

// check if wap

function check_wap(){

    // 先检查是否为wap代理，准确度高

    if(stristr($_SERVER['HTTP_VIA'],"wap")){

        return true;

    }

    // 检查浏览器是否接受 WML.

    elseif(strpos(strtoupper($_SERVER['HTTP_ACCEPT']),"VND.WAP.WML") > 0){

        return true;

   }

   //检查USER_AGENT

   elseif(preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])){

        return true;

    }

    else{

        return false;

   }

}