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PHP curl setopt httpheader not working

I observed network status when loading public website and I try to curl the website.
However, it turns out that the curl result will redirect me to an error page instead to the final page. In this case I try to modify the request headers especially host and referer but then it turned out that the headers are still pointing to localhost.
Besides that, can I "maintain" the modified headers information during the other request processing works in the same page load?

function curlFollow($url){
$handle = curl_init();
$host = parse_url($url,PHP_URL_HOST);
// var_dump($url);exit();
$curlHeaders = array(
"Host: $host",
"Referer: $url",
"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
"Accept: application/json, text/plain, */*",
"Accept-Encoding: gzip, deflate, br",
"Accept-Language: en-US,en;q=0.9",
"Connection: keep-alive",
);
if($url == ""){
die("The incoming url is blank!");
}
$proxyServer = '185.18.141.40:41258';
curl_setopt($handle, CURLOPT_URL, $url); // Set the url
curl_setopt($handle, CURLOPT_RETURNTRANSFER, true); // Set the result output to be a string.
curl_setopt($handle, CURLOPT_PROXY, $proxyServer);
curl_setopt($handle, CURLOPT_FOLLOWLOCATION, 0);
curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, 0); //No SSL verification
curl_setopt($handle, CURLOPT_ENCODING, ''); //Handle all type of encoding
curl_setopt($handle, CURLOPT_AUTOREFERER, true);
curl_setopt($handle, CURLOPT_HTTPHEADER,$curlHeaders);
$output = curl_exec($handle);
echo curl_error($handle);
$response = curl_getinfo($handle);
echo curl_errno($handle);
curl_close($handle);
return $output;
}


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