cURL PHP return weird string - php

Question

Recently, I want to scraping a website using CURL PHP. And the problem come. It return weird string combination and symbol. I really confused about it. I have set the encoding, both in header and declared it in curlopt.
Here is the coding I used to scrap.
$ch = curl_init();
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
//curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate,br');
curl_exec($ch);
curl_close($ch);
And this is the header I sent :
$header = [
':authority: www.airpaz.com',
':method: GET',
':path: $path,
':scheme: https',
'accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
'accept-encoding: gzip, deflate, br',
'accept-language: en-US,en;q=0.9',
'cache-control: max-age=0',
'referer: $referer',
'upgrade-insecure-requests: 1',
'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36'
];
When I run it, it return exactly like the image below :
Can anyone tell what's the problem is? Thanks for your time. It will help me a lot