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一个读取远程文件的函数，非常好用！
- function urlfopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE , $ip = '', $timeout = 15, $block = TRUE, $encodetype = 'URLENCODE') {
- $return = '';
- $matches = parse_url($url);
- $host = $matches['host'];
- $path = $matches['path'] ? $matches['path'].(isset($matches['query']) ? '?'.$matches['query'] : '') : '/';
- $port = !empty($matches['port']) ? $matches['port'] : 80;
-
- if($post) {
- $out = "POST $path HTTP/1.0\r\n";
- $out .= "Accept: */*\r\n";
- $out .= "Accept-Language: zh-cn\r\n";
- $boundary = $encodetype == 'URLENCODE' ? '' : ';'.substr($post, 0, trim(strpos($post, "\n")));
- $out .= $encodetype == 'URLENCODE' ? "Content-Type: application/x-www-form-urlencoded\r\n" : "Content-Type: multipart/form-data$boundary\r\n";
- $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
- $out .= "Host: $host\r\n";
- $out .= 'Content-Length: '.strlen($post)."\r\n";
- $out .= "Connection: Close\r\n";
- $out .= "Cache-Control: no-cache\r\n";
- $out .= "Cookie: $cookie\r\n\r\n";
- $out .= $post;
- } else {
- $out = "GET $path HTTP/1.0\r\n";
- $out .= "Accept: */*\r\n";
- $out .= "Accept-Language: zh-cn\r\n";
- $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
- $out .= "Host: $host\r\n";
- $out .= "Referer: \r\n";
- $out .= "Connection: Close\r\n";
- $out .= "Cookie: $cookie\r\n\r\n";
- }
- $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
- if(!$fp) {
- return '';
- } else {
- stream_set_blocking($fp, $block);
- stream_set_timeout($fp, $timeout);
- @fwrite($fp, $out);
- $status = stream_get_meta_data($fp);
- if(!$status['timed_out']) {
- while (!feof($fp)) {
- if(($header = @fgets($fp)) && ($header == "\r\n" || $header == "\n")) {
- break;
- }
- }
-
- $stop = false;
- while(!feof($fp) && !$stop) {
- $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));
- $return .= $data;
- if($limit) {
- $limit -= strlen($data);
- $stop = $limit }
- }
- }
- @fclose($fp);
- return $return;
- }
- }
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