如何在没有数组和没有循环的情况下仅在preg_match_all中打印组2的值

Question

How to print only the value of group 2 in preg_match_all without the array and without loops

$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);

I only want (.*?) result to use it any where

Answer 1

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

but! Do not parse HTML with regex, use proper HTML parsing tools instead, in this case

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