Why curl charset don't change ? - php

Question

I need to parse with simpl_html_dom german site.I have a problem with german Umlauts, because utf-8 don't support Umlauts. I know ,if convert text from UTF-8 to UTF-16 or ISO-8859-1 problem solved.I use CURL for get content page. This page have charset ISO-8859-1.I try to set CURLOPT_ENCODING ISO-8859-1 ,but Curl always return the utf-8 text.I don't know what do.
Code of this method.
public function testsec()
{
require_once DIR_SYSTEM.'library'.DIRECTORY_SEPARATOR.'simpleHtml'.DIRECTORY_SEPARATOR.'simple_html_dom.php';
$regexpSecond = "~Möglicherweise.*? Vielen Dank~su";
$headers = array(
"User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0",
"Accept: text/plain",
"Connection: keep-alive",
);
$fp = fopen(DIR_ADMIN.'logCurl.txt','w+');
$head = fopen(DIR_ADMIN.'headers.txt','w+');
$curl = curl_init("http://test.site.com/bla-bla-bla");
curl_setopt($curl, CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl, CURLOPT_ENCODING , "UTF-16");
curl_setopt($curl, CURLOPT_VERBOSE, 1);
curl_setopt($curl, CURLOPT_STDERR, $fp);
curl_setopt($curl, CURLOPT_HEADER ,$headers);
curl_setopt($curl, CURLOPT_WRITEHEADER, $head);
$result = curl_exec($curl);
curl_close($curl);
fclose($fp);
fclose($head);
$html = str_get_html($result);
echo mb_detect_encoding($result); //utf-8
}
Headers response
HTTP/1.1 200 OK
Date: Sun, 03 Jul 2016 05:22:34 GMT
Server: Apache
Set-Cookie: JTLSHOP=c1qv3vafghmf3ih43g5m96epi4; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: max-age=1, private, must-revalidate
Pragma: no-cache
Vary: Accept-Encoding
X-Powered-By: PleskLin
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=iso-8859-1

Answer 1

UTF-8 support Umlauts.
http://www.periodni.com/unicode_utf-8_encoding.html#german_special_characters
If you want to convert charset, Use ICONV function.