PHP: file_get_contents from a page using regex h2 tag that is inside a div

Question

This used to work fine to get me a text from a certain web page that exists in a div tag when a user type the id below:

function get_text($id) {
  $result = file_get_contents('www.site.net/.$id.'');
  $regex = '/<div class="x">([^<]*)<\/div>/';
  if (preg_match($regex, $result, $matches) && !empty($matches[1])) {   
    return $matches[1]; 
  } else {
    return 'N/A';
  }
}

Now the text is more difficult to get, because it's situated here:

 <div class="X2">
   <h2 style="font-family: 'Pacifico', cursive;">TEXT</h2>
 </div>

I tried both div and h2 but it returns me nothing, please help ! thank you.

Answer 1

This is quite easily solved using PHP's DOMDocument:

$html = <<<'EOT'
<div class="X2">
 <h2 style="font-family: 'Pacifico', cursive;">TEXT</h2>
 </div>
EOT;

$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$div = $xpath->query('//div[contains(@class, "X2")]')->item(0);
echo $div->textContent;

Output:

TEXT

Demo on 3v4l.org

To fit into your function environment, this should work:

function get_text($id) {
    $html = file_get_contents("www.site.net/$id");
    $doc = new DOMDocument();
    $doc->loadHTML($html);
    $xpath = new DOMXPath($doc);
    $div = $xpath->query('//div[contains(@class, "X2")]');
    if (count($div)) {
        return $div->item(0)->textContent;
    }
    else {
        return 'N/A';
    }
}