Question

如何在preg_match_all中仅打印组2的值，而不使用数组和循环

$url = 'https://hentaifox.com/gallery/58091/';

curl_setopt($curl, CURLOPT_URL, $url);

curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

$result = curl_exec($curl);

preg_match_all('!<a href="\/tag\/(.*?)\/"><span class="badge tag">(.*?)<\/span><\/a>!', $result, $tags);

我只希望（。*？）结果在任何地方使用它

Answer 1

不可能做那样的事情吗？

<div class="item-info">
<p class="title product-field" translate="no" data-track-info=" 
{&quot;description&quot;:&quot;title&quot;}" data-force-track="">
       <a href="https://www.kobo.com/us/en/ebook/added-youth" 
 class="">Added Youth</a>
 </p>
 <p class="subtitle product-field" translate="no" data-track-info=" 
     {&quot;description&quot;:&quot;subtitle&quot;}" data-force-track="">
       <a href="https://www.kobo.com/us/en/ebook/added-youth" class="">All Natural Anti-Aging Program</a>
  </p>

（我不是专家，所以也许您需要稍微更改一下数字...）

Answer 2

$group2=$tags[1];
print_r($group2);

但是！ Do not parse HTML with regex，在这种情况下，请改用正确的HTML解析工具

$domd = @DOMDocument::loadHTML($result);
$xp = new DOMXPath($domd);
foreach ($xp->query("//a[contains(@href,'/tag/')]/span[1]") as $tag) {
    $tags[] = trim($tag->textContent);
}

如何仅在preg_match_all中打印组2的值，而不使用数组和循环

2 个答案: