/**
 
 * @author lanren <service@kuitao8.com>
 * @link http://www.kuitao8.com/
 * @copyright 2010-2014 懒人程序
 * @since 1.0
 */
header("Content-type:text/html;charset=utf-8");
function GetCurl($url){
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_NOBODY,true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION,true);
    curl_setopt($ch, CURLOPT_AUTOREFERER,true);
    curl_setopt($ch, CURLOPT_TIMEOUT,30);
    $rtn = curl_exec($ch);
    curl_exec($ch);
    return $rtn;
}
$resp = GetCurl("http://www.kuitao8.com/2789.shtml");
if(strpos($resp,'404 Not Found')==true) {
    exit('这个页面是404');
}