cURL issue using laravel 5

when I use curl to get the content of an html page, I got a wired content which look like a script. Can you tell me what's wrong with my code, and what is this wired content ?

There is my controller :

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_RETURNTRANSFER => 1,
    CURLOPT_URL => 'https://twitter.com',
));

$data = curl_exec($curl);
dd($data);
curl_close($curl);

And there is what it's look like in the console.

Thank you for all of your answers.

via Chebli Mohamed