无法从flarum获取带有php curl的目标div

Question

I am trying to get latest article from flarum.org but it doesn't get posts. It works other normal sites, but doesn't work in flarum.

Here is my function:

function questions() {

    $url = 'https://discuss.flarum.org/';

    $curl = curl_init();
    curl_setopt( $curl, CURLOPT_URL, $url );
    curl_setopt( $curl, CURLOPT_HEADER, 0 );

    // SSL support
    curl_setopt( $curl, CURLOPT_SSL_VERIFYPEER, false );
    curl_setopt( $curl, CURLOPT_FOLLOWLOCATION, true );
    curl_setopt( $curl, CURLOPT_USERAGENT, $_SERVER[ 'HTTP_USER_AGENT' ] );

    // Variable support
    curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true );

    $result = curl_exec( $curl );

    //echo $result;

    $result = str_replace( array( "\n", "\t", "\r" ), null, $result );

    preg_match_all( '#<div class="DiscussionListItem">(.*?)</div>#', $result, $match );

    print_r( $match );

    curl_close( $curl );

}

This function prints an empty array.

Answer 1

This is not how to parse HTML. Instead, use an HTML parser. Something like this would work, if there were any matching elements in the HTML:

$url = "https://discuss.flarum.org/";
$html = file_get_contents($url);
$dom = new DomDocument();
libxml_use_internal_errors(true);
$dom->loadHTML($html);
$xpath = new DomXPath($dom);
$results = $xpath->query("//div[@class='DiscussionListItem']");
foreach ($results as $result) {
    echo $result->nodeValue;
}

Of course, there aren't any matching elements in the HTML. You might be better off modifying the XPath query to //div[@class='container']/ul/li/a instead.