无法运行DOM（带卷曲）

Question

我试图用另一个代替正在工作的简单DOM HTML解析器片段来发送cookie。问题是它只是将我的页面拧紧。

我想从游戏中获取描述文本，这是在class game_description_snippet的div内。那个特别的div只包含文字而没有其他标签。

非工作：

//Not working at all 
$url = "http://store.steampowered.com/app/100"; 

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_COOKIE, "birthtime=28801; path=/; domain=store.steampowered.com"); 
curl_setopt($ch, CURLOPT_TIMEOUT, 5); 
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 

$result = curl_exec($ch); 

$dom = new domDocument; 
libxml_use_internal_errors(true); 
$dom->loadHTMLFile($result); 

$descrs = $dom->getElementsByClassName('game_description_snippet'); 
foreach ($descrs as $descr) { 
    $spanx = $descr->textContent; 
    echo $spanx; 
} 

试图用它来代替下面的代码，并添加饼干：

//Working, but slowly. 
$url = "http://store.steampowered.com/app/100"; 
$html = file_get_html($url); 

foreach($html->find('div.game_description_snippet') as $element) { 

    if(empty($element)) { 
     $descr = "This link will take you to the full game."; 
    } else { 
     $unformatted = $element->plaintext; 
     $formatted = trim($unformatted); 
     $descr = str_replace("'", "", $formatted); 
     if($descr == "<br>") { 
      $descr == ""; 
     } 
    } 
} 

只是一些指导，将不胜感激。我知道我是一个新手，但我一直在搜索几个小时，我不知道如何继续前进。我没有做一个类似功能的工作，但它并没有包含卷曲部分，只要使用$dom->loadHTMLFile($url);而不是跑..

编辑：

foreach ($nodes as $node) { 
    $span = $node->childNodes; 
    $knas = $span->item(0)->nodeValue; 
    echo $knas; 
} 

这为我工作，但随后的结果没” t只包含文本（它在我当前的情况下），它包含类似<h1>Some text</h1>

Answer 1

根据我们在聊天中的讨论，您需要让PHP请求为cookie，而不是从浏览器发送一个。服务器将验证cookie，如果它不是来自同一个会话，它将不是有效的cookie。

下面是我开始工作的代码。

// Modified the cURL function to accept POST parameters and a cookiejar file 
// You will actually need to use a cookie jar because the cookie is not static 
// Using a cookie jar allows the server to change the cookie as needed and the changed cookie is sent back to the server. 
function request($url, $params=array(), $cookiejar="") { 
    $ch = curl_init(); 
    $curlOpts = array(
     CURLOPT_URL => $url, 
     CURLOPT_SSL_VERIFYPEER => false, 
     CURLOPT_SSL_VERIFYHOST => false, 
     CURLOPT_RETURNTRANSFER => true, 
     CURLOPT_FOLLOWLOCATION => true 
    ); 
    if (!empty($params)) { 
     // If POST values are given, send that shit too 
     $curlOpts[CURLOPT_POST] = true; 
     $curlOpts[CURLOPT_POSTFIELDS] = $params; 
    } 
    if (!empty($cookiejar)) { 

     if(!file_exists($cookiejar)){ 
      echo 'Cookie file missing. please create it first.'; exit; 
     }else if(!is_writable($cookiejar)){ 
      echo 'Cookie file not writable. chmod it to 777.'; exit; 
     } 

     curl_setopt($ch, CURLOPT_COOKIEJAR, realpath($cookiejar)); 
     curl_setopt($ch, CURLOPT_COOKIEFILE, realpath($cookiejar)); 
    } 
    curl_setopt_array($ch, $curlOpts); 
    $answer = curl_exec($ch); 
    // If there was an error, show it 
    if (curl_error($ch)) die(curl_error($ch)); 
    curl_close($ch); 
    return $answer; 
} 

// The url you're trying to access 
$url = "http://store.steampowered.com/app/223470"; 

// The url that gives us the cookie 
$cookie_url = "http://store.steampowered.com/agecheck/app/223470/"; 

// The POST parameters that are sent to the server when requesting a cookie 
$params = array("ageDay"=>1, "ageMonth"=>"January", "ageYear"=>"1915", "snr"=>"1_agecheck_agecheck__age-gate"); 

// This request just give us a cookie. 
request($cookie_url, $params, "cookiejar"); 

// And this request is that page you need 
$html = request($url, array(), "cookiejar"); 

// Domdoc stuff that we already discussed 
$dom = new domDocument; 
libxml_use_internal_errors(true); 
$dom->loadHTML($html); 

$classname="game_description_snippet"; 
$finder = new DomXPath($dom); 
$spaner = $finder->query("//*[contains(@class, '$classname')]"); 

foreach ($spaner as $spane) { 
    $mo = $spane->nodeValue; 
    echo $mo; 
}