Capture div by class

Question

I am trying to capture a div from its class but did not succeed, notice: I try to capture the div with the class class='m-definicao-conteudo' of the site that I inform to Curl, but returns me this error:

Warning:
Domdocument::loadHTML(): Unexpected end tag : a in Entity, line: 102 in /Applications/XAMPP/xamppfiles/htdocs/teste.php on line 13

$ch = curl_init ("");
curl_setopt($ch, CURLOPT_URL, 'http://dicionarioinformal.com.br/aham/');
curl_setopt($ch, CURLOPT_USERAGENT, "Opera/9.80 (J2ME/MIDP; Opera Mini/4.2.14912/870; U; id) Presto/2.4.15"); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
$html = curl_exec($ch);

$dom = new DOMDocument;
$dom->loadHTML($html);

$xpath = new DOMXPath($dom);

$results = $xpath->query("//*[@class='m-definicao-conteudo']");

if ($results->length > 0) {
    echo $review = $results->item(0)->nodeValue;
}

Answer 1

Change the USER_AGENT.

Alter:

curl_setopt($ch, CURLOPT_USERAGENT, "Opera/9.80 (J2ME/MIDP; Opera Mini/4.2.14912/870; U; id) Presto/2.4.15");

To:

curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 5.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36"); 

You can change to any other as long as it is a Desktop browser.

Using the current (Opera Mini) website is redirecting to the 'mobile' model of the site, which does not contain the div. ;)

Answer 2

Your problem seems to me to be the way you’re passing the name of class to be located:

$html = '<div>Ora que raio!</div>
<p>Ola meu nome é pseudomatica (sou normal), etc. Meu nome é assim pq sim</p>
<div class="minhaClasse">Encontrei</div>
<p></p>';

$dom = new DOMDocument;
$dom->loadHTML($html);

$class = 'minhaClasse'; // guarda nome da classe numa variavel

$procura = new DomXPath($dom); // instancia o DomXPath

$div = $procura->query("//*[contains(@class, '$class')]"); // Procura passando a variavel

See example in Ideone:

var_dump($div->item(0)->nodeValue); // string(9) "Encontrei"