一个读取远程文件的PHP函数

一个读取远程文件的函数，非常好用！

1. function urlfopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE , $ip = '', $timeout = 15, $block = TRUE, $encodetype = 'URLENCODE') {
2. $return = '';
3. $matches = parse_url($url);
4. $host = $matches['host'];
5. $path = $matches['path'] ? $matches['path'].(isset($matches['query']) ? '?'.$matches['query'] : '') : '/';
6. $port = !empty($matches['port']) ? $matches['port'] : 80;
8. if($post) {
9. $out = "POST $path HTTP/1.0\r\n";
10. $out .= "Accept: */*\r\n";
11. $out .= "Accept-Language: zh-cn\r\n";
12. $boundary = $encodetype == 'URLENCODE' ? '' : ';'.substr($post, 0, trim(strpos($post, "\n")));
13. $out .= $encodetype == 'URLENCODE' ? "Content-Type: application/x-www-form-urlencoded\r\n" : "Content-Type: multipart/form-data$boundary\r\n";
14. $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
15. $out .= "Host: $host\r\n";
16. $out .= 'Content-Length: '.strlen($post)."\r\n";
17. $out .= "Connection: Close\r\n";
18. $out .= "Cache-Control: no-cache\r\n";
19. $out .= "Cookie: $cookie\r\n\r\n";
20. $out .= $post;
21. } else {
22. $out = "GET $path HTTP/1.0\r\n";
23. $out .= "Accept: */*\r\n";
24. $out .= "Accept-Language: zh-cn\r\n";
25. $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
26. $out .= "Host: $host\r\n";
27. $out .= "Referer: \r\n";
28. $out .= "Connection: Close\r\n";
29. $out .= "Cookie: $cookie\r\n\r\n";
30. }
31. $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
32. if(!$fp) {
33. return '';
34. } else {
35. stream_set_blocking($fp, $block);
36. stream_set_timeout($fp, $timeout);
37. @fwrite($fp, $out);
38. $status = stream_get_meta_data($fp);
39. if(!$status['timed_out']) {
40. while (!feof($fp)) {
41. if(($header = @fgets($fp)) && ($header == "\r\n" || $header == "\n")) {
42. break;
43. }
44. }
46. $stop = false;
47. while(!feof($fp) && !$stop) {
48. $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));
49. $return .= $data;
50. if($limit) {
51. $limit -= strlen($data);
52. $stop = $limit <= 0;
53. }
54. }
55. }
56. @fclose($fp);
57. return $return;
58. }
59. }