Simple html dom div downloading issue - php

Question

Here's some php code that i wrote. It's mainly based on docs.
It's obviously using simple html dom
The problem is it doesnt really work and i dunno why.
<?php
include("simple_html_dom.php");
$context = stream_context_create();
stream_context_set_params($context, array('user_agent' => "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2049.0 Safari/537.36"));
$html = file_get_html('http://www.ask.fm', 0, $context);
$elem = $html->find('div[id=heads]', 0);
var_dump($elem);
?>
What i want is to set useragent which i tried to do above that sentence. And then i want to download div with id "heads". That's not much but i couldnt figure it out in any way.

Answer 1

<?php
include "simplehtmldom_1_5/simple_html_dom.php";
function curl($url)
{
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
// you may set this options if you need to follow redirects. Though I didn't get any in your case
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
$content = curl_exec($curl);
curl_close($curl);
return $content;
}
$html = str_get_html(curl("http://www.ask.fm"));
echo $elem = $html->find('div[id=heads]', 0);
?>
I think it is useful for you