SimplePie_Misc::get_curl_version PHP Method

    function get_curl_version()
    {
        if (is_array($curl = curl_version())) {
            $curl = $curl['version'];
        } elseif (substr($curl, 0, 5) === 'curl/') {
            $curl = substr($curl, 5, strcspn($curl, "\t\n\v\f\r", 5));
        } elseif (substr($curl, 0, 8) === 'libcurl/') {
            $curl = substr($curl, 8, strcspn($curl, "\t\n\v\f\r", 8));
        } else {
            $curl = 0;
        }
        return $curl;
    }

 function SimplePie_File($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false)
 {
     if (class_exists('idna_convert')) {
         $idn = new idna_convert();
         $url = $idn->encode($url);
     }
     $this->url = $url;
     $this->useragent = $useragent;
     if (preg_match('/^http(s)?:\\/\\//i', $url)) {
         if (empty($useragent)) {
             $useragent = ini_get('user_agent');
             $this->useragent = $useragent;
         }
         if (!is_array($headers)) {
             $headers = array();
         }
         if (extension_loaded('curl') && version_compare(SimplePie_Misc::get_curl_version(), '7.10.5', '>=') && !$force_fsockopen) {
             $this->method = 'curl';
             $fp = curl_init();
             $headers2 = array();
             foreach ($headers as $key => $value) {
                 $headers2[] = "{$key}: {$value}";
             }
             curl_setopt($fp, CURLOPT_ENCODING, '');
             curl_setopt($fp, CURLOPT_URL, $url);
             curl_setopt($fp, CURLOPT_HEADER, 1);
             curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1);
             curl_setopt($fp, CURLOPT_TIMEOUT, $timeout);
             curl_setopt($fp, CURLOPT_REFERER, $url);
             curl_setopt($fp, CURLOPT_USERAGENT, $useragent);
             curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2);
             if (!ini_get('open_basedir') && !ini_get('safe_mode')) {
                 curl_setopt($fp, CURLOPT_FOLLOWLOCATION, 1);
                 curl_setopt($fp, CURLOPT_MAXREDIRS, $redirects);
             }
             $this->headers = trim(curl_exec($fp));
             if (curl_errno($fp) == 23 || curl_errno($fp) == 61) {
                 curl_setopt($fp, CURLOPT_ENCODING, 'none');
                 $this->headers = trim(curl_exec($fp));
             }
             if (curl_errno($fp)) {
                 $this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp);
                 $this->success = false;
                 return false;
             }
             $info = curl_getinfo($fp);
             $this->headers = explode("\r\n\r\n", $this->headers, $info['redirect_count'] + 2);
             if (count($this->headers) == $info['redirect_count'] + 1) {
                 $this->headers = array_pop($this->headers);
                 $this->body = '';
             } else {
                 $this->body = array_pop($this->headers);
                 $this->headers = array_pop($this->headers);
             }
             $this->headers = $this->parse_headers($this->headers);
             if (($this->headers['status']['code'] == 301 || $this->headers['status']['code'] == 302 || $this->headers['status']['code'] == 303 || $this->headers['status']['code'] == 307) && !empty($this->headers['location']) && $this->redirects < $redirects) {
                 $this->redirects++;
                 return $this->SimplePie_File($this->headers['location'], $timeout, $redirects, $headers, $useragent, $force_fsockopen);
             }
         } else {
             $this->method = 'fsockopen';
             $url_parts = parse_url($url);
             if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) == 'https') {
                 $url_parts['host'] = "ssl://{$url_parts['host']}";
                 $url_parts['port'] = 443;
             }
             if (!isset($url_parts['port'])) {
                 $url_parts['port'] = 80;
             }
             $this->fp = fsockopen($url_parts['host'], $url_parts['port'], $errno, $errstr, $timeout);
             if (!$this->fp) {
                 $this->error = 'fsockopen error: ' . $errstr;
                 $this->success = false;
                 return false;
             } else {
                 stream_set_timeout($this->fp, $timeout);
                 $get = isset($url_parts['query']) ? "{$url_parts['path']}?{$url_parts['query']}" : $url_parts['path'];
                 $out = "GET {$get} HTTP/1.0\r\n";
                 $out .= "Host: {$url_parts['host']}\r\n";
                 $out .= "User-Agent: {$useragent}\r\n";
                 if (function_exists('gzinflate')) {
                     $out .= "Accept-Encoding: gzip,deflate\r\n";
                 }
                 if (!empty($url_parts['user']) && !empty($url_parts['pass'])) {
                     $out .= "Authorization: Basic " . base64_encode("{$url_parts['user']}:{$url_parts['pass']}") . "\r\n";
                 }
                 foreach ($headers as $key => $value) {
                     $out .= "{$key}: {$value}\r\n";
                 }
                 $out .= "Connection: Close\r\n\r\n";
                 fwrite($this->fp, $out);
                 $info = stream_get_meta_data($this->fp);
                 $data = '';
                 while (strpos($data, "\r\n\r\n") === false && !$info['timed_out']) {
                     $data .= fgets($this->fp, 128);
                     $info = stream_get_meta_data($this->fp);
                 }
                 if (!$info['timed_out']) {
                     $this->headers = $this->parse_headers($data);
                     if (($this->headers['status']['code'] == 301 || $this->headers['status']['code'] == 302 || $this->headers['status']['code'] == 303 || $this->headers['status']['code'] == 307) && !empty($this->headers['location']) && $this->redirects < $redirects) {
                         $this->redirects++;
                         return $this->SimplePie_File($this->headers['location'], $timeout, $redirects, $headers, $useragent, $force_fsockopen);
                     }
                 } else {
                     $this->close();
                     $this->error = 'fsocket timed out';
                     $this->success = false;
                     return false;
                 }
             }
         }
         return $this->headers['status']['code'];
     } else {
         $this->method = 'fopen';
         if ($this->fp = fopen($url, 'r')) {
             return true;
         } else {
             $this->error = 'fopen could not open the file';
             $this->success = false;
             return false;
         }
     }
 }