PHP Curl在我的笔记本电脑中返回空白页但在我的朋友笔记本电脑中工作正常

Question

I have read many similar title questions about PHP CURL return blank page, but none of them worked for me...

The problem is that when I'm sending an cURL query to a website all I get is a blank page. But this problem just happened im my laptop, i have tried to test in my two friends Laptop and just working fine.

The code i have try is this video https://www.youtube.com/watch?v=lJqnGnnnwUQ

I try to grab the http://www.hackforums.net/, it's return blank page. But when i try the blogspot page , it can grab that website.

Im using Asus a455ln WampServer Version 2.5 Windows 8.1 Pro

this is the copy of the code

<?php

echo grab_page("http://www.hackforums.net/");

function login($url,$data){
    $fp = fopen("cookie.txt", "w");
    fclose($fp);
    $login = curl_init();
    curl_setopt($login, CURLOPT_COOKIEJAR, "cookie.txt");
    curl_setopt($login, CURLOPT_COOKIEFILE, "cookie.txt");
    curl_setopt($login, CURLOPT_TIMEOUT, 40000);
    curl_setopt($login, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($login, CURLOPT_URL, $url);
    curl_setopt($login, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    //curl_setopt($login, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36");
    curl_setopt($login, CURLOPT_FOLLOWLOCATION, TRUE);
    curl_setopt($login, CURLOPT_POST, TRUE);
    curl_setopt($login, CURLOPT_POSTFIELD, $data);
    ob_start();
    return curl_exec($login);
    ob_end_clean();
    curl_close($login);
    unset($login);
}

function grab_page($site){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY ) ; 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    //curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36");
    curl_setopt($ch, CURLOPT_TIMEOUT, 40000);
    curl_setopt($ch, CURLOPT_COOKIEFILE, "cookie.txt");
    curl_setopt($ch, CURLOPT_URL, $site);
    ob_start();
    return curl_exec($ch);

    ob_end_clean();
    curl_close($ch);    
}

function post_data($site,$data){
    $datapost = curl_init();
    $headers = array("Expect:");
    curl_setopt($datapost, CURLOPT_URL, $site);
    curl_setopt($datapost, CURLOPT_TIMEOUT, 40000);
    curl_setopt($datapost, CURLOPT_HEADER, TRUE);
    curl_setopt($datapost, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($datapost, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    //curl_setopt($datapost, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36");
    curl_setopt($datapost, CURLOPT_POST, TRUE);
    curl_setopt($datapost, CURLOPT_POSTFIELD, $data);
    curl_setopt($datapost, CURLOPT_COOKIEFILE, "cookie.txt");
    ob_start();
    return curl_exec($datapost);
    ob_end_clean();
    curl_close($datapost);
    unset($datapost);
}

?>