我是一個新手，試圖編寫一個爬蟲來從論壇中獲取一些統計信息。這是我的代碼：<?php$ch = curl_init();$timeout = 0; // set to zero for no timeoutcurl_setopt ($ch, CURLOPT_URL, 'http://m.jeuxvideo.com/forums/42-51-61913988-1-0-1-0-je-code-un-bot-pour-le-forom-je-vous-le-montre-en-action.htm');curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);$file_contents = curl_exec($ch);curl_close($ch);$dom = new DOMDocument;libxml_use_internal_errors(true);$dom->loadHTML($file_contents);$xpath = new DOMXPath($dom);$posts = $xpath->query("//div[@class='who-post']/a");//$elements = $xpath->query("/html/body/div[@id='yourTagIdHere']");$dates = $xpath->query("//div[@class='date-post']");//$elements = $xpath->query("/html/body/div[@id='yourTagIdHere']");$contents = $xpath->query("//div[@class='message  text-enrichi-fmobile  text-crop-fmobile']/p");//$elements = $xpath->query("/html/body/div[@id='yourTagIdHere']");$i = 0;foreach ($posts as $post) {    $nodes = $post->childNodes;    foreach ($nodes as $node) {    $value = trim($node->nodeValue);      $tab[$i]['author'] = $value;      $i++;    }}$i = 0;foreach ($dates as $date) {    $nodes = $date->childNodes;    foreach ($nodes as $node) {      $value = trim($node->nodeValue);      $tab[$i]['date'] = $value;      $i++;    }}$i = 0;foreach ($contents as $content) {    $nodes = $content->childNodes;    foreach ($nodes as $node) {      $value = $node->nodeValue;      echo $value;        $tab[$i]['content'] = trim($value);        $i++;    }}?><h1>Participants</h2><pre><?php print_r($tab);?></pre>如您所見，代碼不會檢索某些內容。例如，我試圖從以下位置檢索此內容：http: //m.jeuxvideo.com/forums/42-51-61913988-1-0-1-0-je-code-un-bot-pour-le-forom -je-vous-le-montre-en-action.htm第二個帖子是一張圖片，我的代碼不起作用。另一方面，我想我犯了一些錯誤，我發現我的代碼很難看。你能幫我嗎 ？