省略了DOMXPath对象值

I read many stackoverflow question and I'm using this code but I don't know why this is not work.
Here is a code.

$url = 'http://m.cricbuzz.com/cricket-schedule';
$source = file_get_contents($url);

$doc = new DOMDocument;
@$doc->loadHTML($source);

$xpath = new DOMXPath($doc);
$classname = "list-group";
$events = $xpath->query("//*[contains(@class, '$classname')]");

var_dump($xpath);

Can you please check it why this is not working actually I want to get data from list-group

The code is correct. It correctly fetches a list of DOM nodes having the specified class attribute value into the $events variable:

$events = $xpath->query("//*[contains(@class, '$classname')]");

which is an instance of DOMNodeList. Next you should iterate the list and fetch the data you need from $events. For example, if you need the outer HTML for the nodes, use something like this:

foreach ($events as $e) {
  printf("<<<<<
%s
>>>>>
", $e->ownerDocument->saveXML($e));
}

P.S.: I would rename $events to $elements.