function content($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt ($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13");

    $headers = array
    (
        'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*;q=0.8',
        'Accept-Language: ru,en-us;q=0.7,en;q=0.3',
        'Accept-Encoding: gzip',
        #'Accept-Charset: windows-1251,utf-8;q=0.7,*;q=0.7'
    );

    curl_setopt($ch, CURLOPT_PROXY, '81.177.27.248:31340');
    curl_setopt($ch, CURLOPT_PROXYUSERPWD, "FMqTVm:43DP4P");


    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HEADER, 0);

    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch,CURLOPT_ENCODING, "");

    $cont = curl_exec($ch);
    return $cont;
}

var_dump(content('https://testurl.ru'));